TWI497299B - Computer peripheral device and operating method thereof - Google Patents

Description

Computer peripheral device and its operation method

The present invention relates to a computer peripheral device, and more particularly to a computer peripheral device having a universal serial busbar connection interface.

In the current electronic device connection interface, the universal serial bus (USB) has gradually become an increasingly important specification. USB is not only a bus interface standard interface for connecting computer systems and computer peripheral devices, but also a kind of The input/output interface specifications are widely used in various information and communication products such as personal computers and portable electronic devices, and have been extended to applications in home appliances, multimedia, game consoles and other related fields.

The USB interface is not only small in size, but also suitable for various types of electronic devices. In addition to being used as a data transmission interface, the USB itself also includes a power transmission function. Therefore, there is also a lot of convenience in application, such as power supply and charging function. Moreover, in order to expand the application level, USB connector specifications have developed different forms of specifications, such as TYPE-A, TYPE-B, MICRO or MINI and other different USB connectors.

In addition to the above advantages, USB also has excellent performance in data transmission. The original standard USB 1.1 has a maximum transmission bandwidth of 12 Mbps. Later, when it was upgraded to USB 2.0, the maximum transmission bandwidth was increased to 480 Mbps. The recently introduced USB 3.0 has been upgraded from 480Mbps to 5Gbps.

The new USB 3.0 specification is more compatible with previous USB 2.0 and USB 1.1 versions, and in order to further increase the transfer speed, USB 3.0 from the previous USB 2.0 is a one-way duplex bus that is upgraded to support full-duplex mode transmission. Understandably, the USB 3.0 connection interface has five new contacts compared to the USB 2.0 connection interface, namely SSRX+, SSRX-, SSTX+, SSTX- and GND_DRAIN, where SSRX+ and SSRX- are data input contacts, SSTX+ With SSTX- as the data output contact, these newly added contacts are placed side by side with the current four USB 2.0 contacts (VBus, GND, D+ and D-) and can support fiber transmission. With fiber optic transmission, USB 3.0 can transfer at speeds up to 25 Gbit/s.

In terms of power supply function, USB 3.0 provides a power supply standard from 500mA to 900mA. It also uses multi-layer power management technology to provide different power management solutions for different devices.

However, with the upgrade of the USB specification, even if USB 3.0 can support the previous specifications (such as USB 2.0 and USB 1.1), it is necessary to first perform the USB specification judgment procedure, otherwise the related functions will not be properly supported. And currently in the market, the promotion of USB 3.0 is still not fully popular, and many of the electronic products in use are still using USB 2.0 specifications. Moreover, for the judgment of the USB specification, the main judgment method is that on the circuit board of the computer system side, an additional USB3.0 control controller (host controller) is additionally configured for judging the USB specification of the external device. However, when the USB device specification of the external device is USB 3.0, and the computer system is only the USB 2.0 specification, since the configuration of the USB 3.0 control chip is not included in the computer system, the computer system cannot recognize the USB 3.0. External devices, or directly support some functions of this USB 3.0 external device in support of USB 2.0, which will easily lead to the optimization of some functions or features of the USB 3.0 external device, or cause USB under long-term use. 3.0 external device Damaged. For example, when a USB 3.0 external device is plugged into a USB 2.0 connector on the computer system, due to different power supply standards, the charging time of the USB 3.0 external device may be prolonged or noise may be generated when the sound is played.

As a result, the USB 3.0 external device can only be applied to a computer system equipped with a USB 3.0 control chip and a connector, and cannot be compatible with a computer system having only a USB 3.0 specification or lower, resulting in a considerable use of the USB 3.0 external device. limit. In addition, in order to overcome the above factors, the additional configuration of the USB 3.0 control chip in the computer system of the USB 3.0 specification or less often causes an additional cost burden, and is redundant when the computer system can support the USB 3.0.

In view of the above problems, the present invention provides a computer peripheral device and a method for operating the same, so as to solve the conventional computer peripheral device having a higher USB specification, which is not suitable for a computer system having only a lower USB specification, so that the computer peripheral device is used. Restricted issues.

The invention discloses a computer peripheral device suitable for a computer system, the computer system having a system end connection interface. The computer peripheral device comprises a device end connection interface, a control unit and an impedance unit. The device end connection interface is detachably electrically inserted into the system end connection interface of the computer system, and the device end connection interface comprises a power supply pin and a ground. The bungee pin is electrically connected to one of the power levels of the computer system and forms a voltage level at the ground bungee pin. The control unit is electrically connected to the ground bungee pin of the device end connection interface, and determines the specification of the system end connection interface of the computer system according to the voltage level of the ground bungee pin. The impedance unit is electrically connected to the power pin and the ground bungee pin of the device connection interface, respectively, and is selected Selectively pull down the voltage level of the ground bungee pin.

According to the computer peripheral device disclosed in the present invention, the control unit determines that the system end connection interface of the computer system is a universal serial bus 2.0 specification or a 3.0 specification according to the voltage level, and when the impedance unit pulls the voltage level low, the control unit determines the system end. The connection interface is the Universal Serial Bus 3.0 specification.

The invention also discloses a computer peripheral device suitable for a computer system, the computer system having a system end connection interface. The computer peripheral device includes a device end connection interface, a control unit, an impedance unit, and an operational amplifier. The device end connection interface is detachably electrically inserted into the system end connection interface of the computer system, and the device end connection interface comprises a power supply pin and a ground bungee pin, and the power pin is electrically connected to one of the computer system. Bit, and form a voltage level at the ground bungee pin. The control unit is electrically connected to the ground bungee pin of the device end connection interface, and determines the specification of the system end connection interface of the computer system according to the voltage level of the ground bungee pin. The impedance unit is electrically connected to the power pin and the ground pin of the device connection interface, and selectively lowers the voltage level of the ground pin. The operational amplifier is electrically connected to the device end connection interface and the control unit, wherein the control unit generates a power control signal according to the voltage level, and the operational amplifier adjusts the amplification power according to the power control signal.

The computer peripheral device disclosed in the present invention further comprises a speaker electrically connected to the operational amplifier, and the operational amplifier drives the speaker according to the power control signal.

The computer peripheral device disclosed in the present invention further comprises an audio processor electrically connected to the operational amplifier and the device end connection interface, and the audio processor receives an audio signal of the computer system and transmits the audio signal to the speaker via the operational amplifier.

The invention also discloses a method for operating a computer peripheral device, comprising the steps of: electrically connecting a device end connection interface to a system end connection interface of a computer system, so as to electrically connect one of the power supply pins of the device end connection interface; One power level of the computer system, and one of the grounding poles of the device connection interface forms a voltage level; the impedance level of the grounding pole is selectively pulled down by an impedance unit; The unit detects the voltage level of one of the grounding poles; the control unit determines the specification of the system-side connection interface of the computer system according to the voltage level.

The operating method of the computer peripheral device disclosed by the present invention further includes: the control unit generates a power control signal corresponding to the voltage level, and transmits the power control signal to an operational amplifier; and the step of adjusting the amplification power by the operational amplifier according to the power control signal.

The method for operating the computer peripheral device disclosed in the present invention further comprises the step of: operating the amplifier to drive a speaker with the adjusted amplification power.

The utility model has the advantages that the circuit connection design between the control unit and the device end connection interface of the computer peripheral device is directly connected, for example, a microcontroller unit (MCU) of the computer peripheral device is electrically connected to the USB 3.0 connection interface. The grounding pole position enables the computer peripheral device of the present invention to actively determine the specification of the system end connection interface of the computer system through the micro control chip, and adjust the electrical characteristics and functions of the computer peripheral device according to the specification, such as amplifying the electrical property. The power of the signal allows the performance of the computer peripheral device to be optimized, and no additional configuration of the USB 3.0 control chip on the computer system or the computer peripheral device is required, and the production cost of the related product is also saved.

Regarding the features, implementations and effects of the present invention, the preferred embodiment is in conjunction with the drawings. The details are as follows.

The computer peripheral device disclosed in the present invention may be a computer peripheral device such as a smart phone, an audio, a speaker, a walkman, a flash drive, a video player or a netbook with a USB connection interface, but does not This is limited.

Please refer to FIG. 1 , which is a block diagram of a computer peripheral device 10 according to a first embodiment of the present invention.

The computer peripheral device 10 disclosed in the first embodiment of the present invention is applicable to a computer system 20, and the computer system 20 is electrically disposed with at least one system end connection interface 210. The computer peripheral device 10 can receive power and/or transmit electrical signals through the system-side connection interface 210 electrically inserted into the computer system 20.

The computer peripheral device 10 includes a device end connection interface 100 electrically disposed on a motherboard, a control unit 130, and an impedance unit 140. The computer peripheral device 10 is detachably electrically inserted through the device end connection interface 100. The system end connection interface 210 of the computer system 20, wherein the device end connection interface 100 includes a power supply pin 110 and a USB 3.0 connection interface of the ground bungee pin 120, so that the computer peripheral device 10 is electrically inserted into the computer system 20 The power pin 110 of the device-side connection interface 100 is electrically connected to one of the power levels of the computer system 20 and forms a voltage level on the ground-drain pin 120. The control unit 130 can be, but is not limited to, a central processing unit (CPU) or a microcontroller. The control unit 130 is electrically connected to the ground bungee pin 120 of the device end connection interface 100 for dynamic detection. The voltage level of the ground bungee pin 120 is determined, and the gauge of the system end connection interface 210 of the computer system 20 is determined according to the voltage level of the ground bungee pin 120. grid. The impedance unit 140 is electrically connected to the power pin 10 and the ground bunge pin 120 of the device end connection interface 100 for selectively lowering the voltage level of the ground bunge pin 120.

It should be noted that the device end connection interface 100 of the computer peripheral device 10 disclosed in the present invention is a USB 3.0 specification connection interface, so that the power pin 110 is downward compatible with the USB 2.0 specification power pin. (VBUS), while the ground bungee pin 120 belongs to the USB 3.0 specification ground bungee pin (GND_DRAIN). Therefore, when the computer peripheral device 10 of the present invention is electrically inserted into the system-side connection interface 210 of the computer system 20, if the computer system 20 does not support the USB 3.0 specification and only supports the USB 2.0 specification, the ground of the present invention The bungee pin 120 must not be connected to the corresponding ground point on the system side connection interface 210 of the computer system 20. However, since the computer system 20 still supports the USB 2.0 specification, the power pin 110 of the computer peripheral device 10 of the present invention is still connected to a USB voltage source of the computer system 20 through the system-side connection interface 210 of the computer system 20, and When the power pin 110 is further connected to the floating ground pin 120 through the impedance unit 140, a voltage level of the USB voltage source from the computer system 20 is generated on the ground pin 120. . At this time, the control unit 130 of the computer peripheral device 10 can detect the voltage level of the ground bungee pin 120, and then judge that the computer system 20 inserted in the computer peripheral device 10 cannot support the USB 3.0 specification, and only supports the USB. 2.0 specifications.

On the other hand, if the computer system 20 supports the USB 3.0 specification, the ground bungee pin 120 of the computer peripheral device 10 of the present invention is necessarily connected to the corresponding ground point on the system end connection interface 210 of the computer system 20. To make the ground bungee Pin 120 does not form a null, but forms a grounded voltage level. At this time, the control unit 130 can detect the voltage level of the ground bungee pin 120, and then determine that the computer system 20 can support the USB 3.0 specification.

It is to be noted that the impedance unit 140 of the present invention may be a passive impedance component, such as a resistor, or the impedance unit 140 of the present invention may also be an active impedance component, such as a transistor, but not limited thereto. The user may make different selections or designs for the impedance unit 140 according to different needs or conditions in actual application, and the present invention only uses the impedance unit 140 as an embodiment, but those skilled in the art, The impedance unit 140 of the present invention may have different types or combinations of connections according to actual use requirements. The function of the impedance unit 140 is when the computer system 20 supports the USB 3.0 specification, at the power pin 110 and the ground 汲A path is formed between the poles 120 and the voltage level of the ground bungee pin 120 is pulled down to ground.

The invention can also directly use the existing microcontroller on the computer peripheral device 10 as the control unit 130 of the present invention. Because the present invention only needs to judge the voltage level of the specific pin, the system of the computer system 20 can be judged. The specifications of the interface 210 are connected, so no additional configuration of the USB 3.0 control chip and complex circuit design is required.

It can be understood that, in the computer peripheral peripheral device 10 of the present invention, the device end connection interface 100 may be a connection interface of the USB 3.0 TYPE-A or a connection interface of the TYPE-B, but is not limited thereto.

The function of the computer peripheral device of the present invention is to directly pass through the existing control unit in the peripheral device of the computer, such as a microcontroller (MCU), and the connection design of the circuit. An additional pin is electrically connected to the ground bungee pin of the device end connection interface on the control unit, so that the computer peripheral device of the present invention can actively judge the computer without additional installation of the USB 3.0 control chip. The USB specification of the system's system-side connection interface not only saves the installation cost and cost of the USB 3.0 control chip, but also allows the computer peripheral device to be applied to different USB computer systems and achieves the expected performance.

Please refer to FIG. 2 and FIG. 3 , FIG. 2 is a block diagram of a computer peripheral device 30 according to a second embodiment of the present invention, and FIG. 3 is a flow chart of a method for operating the computer peripheral device 30 according to the second embodiment of the present invention. Figure.

The second embodiment of the present invention is substantially the same as the first embodiment. The difference between the two is that the computer peripheral device 30 disclosed in the second embodiment of the present invention further includes an operational amplifier (OP). -AMP) 150, the operational amplifier 150 is electrically connected to the device end connection interface 100 and the control unit 130, respectively. Moreover, in the operation of the computer peripheral device 30 disclosed in the second embodiment, the device end connection interface 100 is first electrically inserted into the system end connection interface 210 of the computer system 20, so that the device end is connected to the power supply pin of the interface 100. 110 is electrically connected to the power level of the computer system 20, and forms a voltage level at the ground bungee pin 120 of the device-side connection interface 100 (step 401 of FIG. 3). Next, the voltage level of the ground bungee pin 120 is selectively pulled down by the impedance unit 140 (step 403 of FIG. 3). If the system end connection interface 210 of the computer system 20 is a USB 3.0 specification, the computer peripheral device 30 The impedance unit 140 pulls down the voltage level of the ground bungee pin 120; otherwise, if the system end connection interface 210 of the computer system 20 is a USB 3.0 or lower specification, the ground bungee pin 120 of the computer peripheral device 30 is Will form a null state Maintain the original voltage level.

Then, the control unit 130 detects the change of the voltage level of the ground bungee pin 120 (step 405 of FIG. 3), so that the control unit 130 can determine the system end connection interface 210 of the computer system 20 according to the voltage level. Is the specification USB 3.0? Next, the control unit 130 generates a power control signal corresponding to the voltage level (step 407 of FIG. 3), and transmits the power control signal to the operational amplifier 150 (step 409 of FIG. 3). Finally, the operational amplifier 150 adjusts the amplification power in accordance with the power control signal (step 411 of FIG. 3).

Based on the design of the computer peripheral device 10 of the foregoing first embodiment, the computer peripheral device 30 disclosed in the second embodiment of the present invention can further extend different applications, which can not only independently determine the system end connection interface 210 of the computer system 20 The specification is USB 2.0 or USB 3.0, and you can use this judgment result to produce different effects. As mentioned above, the power supply standard of the USB 2.0 is different from that of the USB 3.0. Therefore, the computer peripheral device 30 disclosed in the second embodiment of the present invention can further generate different bias voltages for different system end connection interfaces through the operational amplifier 150. Features, in order to get different power amplification effects and application effects.

Referring to FIG. 4 and FIG. 5, for example, in the computer peripheral device 50 disclosed in the third embodiment of the present invention, in addition to the related constituent elements of the computer peripheral device 30 and the operational amplifier 150 of the second embodiment, A speaker 160 electrically connected to the operational amplifier 150 is also disposed. Therefore, when the computer peripheral device 50 disclosed in the third embodiment is electrically inserted into the system end connection interface 210 of the computer system 20 by the device end connection interface 100, and the specification of the system end connection interface 210 is determined by the control unit 130, The control unit 130 transmits the power control signal to the operational amplifier The amplifier 150 allows the operational amplifier 150 to adjust the amplification power according to the specification of the system-side connection interface 210, and drives the speaker 160 with the adjusted amplification power (step 601 of FIG. 5).

If the control unit 130 determines that the system-side connection interface 210 is a USB 3.0 specification, the control unit 130 sends a power control signal to the operational amplifier 150, so that the operational amplifier 150 adjusts the amplification power corresponding to the USB 3.0 power supply standard, and adjusts the amplification power. The amplification power drives the speaker 160; otherwise, if the control unit 130 determines that the system-side connection interface 210 is a USB 3.0 or lower specification, the control unit 130 transmits a power control signal to the operational amplifier 150, so that the operational amplifier 150 is adjusted with the power supply standard below USB 3.0. The power is amplified such that the operational amplifier 150 drives the speaker 160 at a higher amplification power.

In this way, when the computer peripheral device 50 of the embodiment is applied to the computer system 20 having only the system-side connection interface 210 of the USB 3.0 specification, the computer peripheral device 30 can not only actively determine the USB specification of the system-side connection interface 210. And the amplification power of the operational amplifier 150 can be adjusted according to the USB specification of the system-side connection interface 210, so that the performance of the speaker 160 of the computer peripheral device 50 can be electrically connected to the USB 3.0 connection interface like the computer peripheral device 50. The same performance, that is, during the operation of the speaker 160, the speaker 160 can be prevented from being broken, murmur or popping due to insufficient voltage, so that the computer peripheral device 50 is only applied to the USB 3.0 specification or USB. The 2.0 performance of the computer system 20 with the interface can achieve the same performance.

It should be noted that the above embodiments are merely exemplified by an operational amplifier and a speaker commonly used in a general circuit, but those skilled in the art can The operational amplifier and the speaker of the present invention have different types or connection combinations according to actual use requirements, or other types of electronic components are selected to generate different application effects.

Please refer to FIG. 6 and FIG. 7 , FIG. 6 is a block diagram of a computer peripheral device 70 according to a fourth embodiment of the present invention, and FIG. 7 is a flow chart of a method for operating the computer peripheral device 70 according to the fourth embodiment of the present invention. Figure.

The fourth embodiment of the present invention is substantially identical in structure to the foregoing third embodiment. The difference between the two is that the computer peripheral device 70 disclosed in the fourth embodiment of the present invention further includes an audio processor 170. Connected to the operational amplifier 150 and the device-side interface 100, wherein the audio processor 170 receives an audio signal from the computer system 20 from the device-side interface 100 (step 801 of FIG. 7), and transmits the audio signal to the operational amplifier 150. This audio signal is then transmitted to the speaker 160 via the operational amplifier 150 (step 803 of FIG. 7).

As mentioned above, in addition to the USB connection interface, the most important function is to transmit data. Therefore, the computer peripheral device of the present invention can not only actively determine the USB specification of the system-side connection interface of the computer system, but also According to different USB specifications, the electrical characteristics and functions of the USB are adjusted accordingly. At the same time, different circuit configurations such as an operational amplifier and a speaker or a combination of electronic components are used to generate different application functions, and further can be used as a basis for signal processing. For example, the computer peripheral device of the present invention can receive and transmit data from the computer system, and perform different data processing methods according to the USB specification of the system-side connection interface, for example, for transmission and processing of the sound source signal, so the computer peripheral device of the present invention can be However, it is not limited to a multimedia processing device that plays sound effects.

The utility model has the advantages that the control unit (such as a microcontroller) which is directly connected to the peripheral device of the computer is electrically connected to the grounding pole of the device connection interface, and the grounding pole of the interface of the device is connected. An impedance unit is electrically connected to the power pin, so that the computer peripheral device of the present invention can actively determine the USB specification adopted by the system end connection interface of the computer system, and adjust the electrical of the computer peripheral device according to different USB specifications. Features, so that computer peripherals can achieve similar performance when used with computer systems with different USB specifications. At the same time, the computer peripheral device of the present invention no longer needs to install an additional USB 3.0 control chip, and can determine the USB specification of the computer system, thereby saving the cost and expense of the USB 3.0 control chip and its related electronic components. Moreover, the computer peripheral device of the present invention and the operation method of the computer peripheral device can be further extended, and cooperate with other application circuits or electronic components to generate different application effects.

Although the embodiments of the present invention are disclosed above, they are not intended to limit the present invention. Variations and modifications in form, configuration, and quantity may be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of patent protection of the present invention shall be defined by the scope of the accompanying claims.

10, 30, 50, 70‧‧‧ computer peripherals

100‧‧‧Device-side connection interface

110‧‧‧Power pin

120‧‧‧ Grounded bungee

130‧‧‧Control unit

140‧‧‧impedance unit

150‧‧‧Operational Amplifier

160‧‧‧Speakers

170‧‧‧ audio processor

20‧‧‧ computer system

210‧‧‧System-side connection interface

1 is a block diagram showing a computer peripheral device according to a first embodiment of the present invention.

2 is a block diagram showing a computer peripheral device according to a second embodiment of the present invention.

Fig. 3 is a flow chart showing the steps of the operation method of the computer peripheral device according to the second embodiment of the present invention.

Figure 4 is a block diagram showing a computer peripheral device according to a third embodiment of the present invention.

FIG. 5 is a flow chart of a method for operating a computer peripheral device according to a third embodiment of the present invention; Cheng Tu.

Figure 6 is a block diagram showing a computer peripheral device according to a fourth embodiment of the present invention.

Figure 7 is a flow chart showing the steps of the operation method of the computer peripheral device according to the fourth embodiment of the present invention.

10‧‧‧Computer peripherals

100‧‧‧Device-side connection interface

110‧‧‧Power pin

120‧‧‧ Grounded bungee

130‧‧‧Control unit

140‧‧‧impedance unit

20‧‧‧ computer system

210‧‧‧System-side connection interface

Claims (10)

A computer peripheral device, which is suitable for a computer system, the computer system has a system end connection interface, the computer peripheral device comprises: a device end connection interface, and the detachable electrical connection is inserted into the system end connection interface of the computer system The device end connection interface includes a power supply pin and a ground bungee pin. The power pin is electrically connected to a power level of the computer system, and a voltage level is formed at the ground bungee pin. The power pin is a power pin of the universal serial bus 2.0 specification, and the ground bungee pin is a ground bungee pin of the universal serial bus 3.0 specification; a control unit is electrically connected to the device end Connecting the grounding pole of the interface, and determining the specification of the system end connection interface of the computer system according to the voltage level of the grounding pole; and an impedance unit electrically connected to the device end The power pin of the interface and the ground pin, and selectively lowering the voltage level of the ground pin. The computer peripheral device of claim 1, wherein the control unit determines, according to the voltage level, that the system end connection interface of the computer system is a universal serial bus 2.0 specification or a 3.0 specification, and when the impedance unit is pulled low The voltage level, the control unit determines that the system end connection interface is a universal serial bus 3.0 specification. A computer peripheral device, suitable for a computer system, the computer system has a system end connection interface, the computer peripheral device comprises: a device end connection interface, the detachable electrical plugging in the computer system The system end connection interface, the device end connection interface comprises a power supply pin and a ground bunge pin, the power pin is electrically connected to a power level of the computer system, and forms a ground at the ground bungee pin Voltage level, wherein the power pin is a power pin of the universal serial bus 2.0 specification, and the ground bungee pin is a ground bungee pin of the universal serial bus 3.0 specification; a control unit, electrical connection The grounding pole of the interface is connected to the device end, and the specification of the system end connection interface of the computer system is determined according to the voltage level of the grounding pole position; an impedance unit electrically connected to the device The power pin of the terminal connection interface and the ground pin, and selectively lowering the voltage level of the ground pin; and an operational amplifier electrically connected to the device end interface and the device And a control unit, wherein the control unit generates a power control signal according to the voltage level, and the operational amplifier adjusts the amplification power according to the power control signal. The computer peripheral device of claim 3, further comprising a speaker electrically connected to the operational amplifier, the operational amplifier driving the speaker according to the power control signal. The computer peripheral device of claim 4, further comprising an audio processor electrically connected to the operational amplifier and the device end connection interface, the audio processor receiving an audio signal of the computer system, and An operational amplifier is delivered to the speaker. The computer peripheral device of claim 3, wherein the control unit determines, according to the voltage level, that the system end connection interface of the computer system is a universal sequence sink The current specification is 2.0 or 3.0, and when the impedance unit pulls the voltage level low, the control unit determines that the system-side connection interface is a universal serial bus 3.0 specification. A method for operating a computer peripheral device includes the following steps: electrically inserting a device-side connection interface into a system-side connection interface of a computer system, and a power supply pin of the device connection interface is electrically connected to the computer system One of the power levels, and one of the grounding poles of the device connection interface forms a voltage level, wherein the power pin is a power supply pin of the universal serial bus 2.0 specification, and the ground bungee pin The grounding bungee pin of the universal serial bus 3.0 specification; the voltage level of the ground bungee pin is selectively pulled down by an impedance unit; and one of the ground bungee pins is detected by a control unit a voltage level; and the control unit determines the specification of the system-side connection interface of the computer system according to the voltage level. The method for operating a computer peripheral device according to claim 7, further comprising the steps of: generating, by the control unit, a power control signal corresponding to the voltage level, and transmitting the power control signal to an operational amplifier; and the operational amplifier The amplification power is adjusted according to the power control signal. The method for operating a computer peripheral device according to claim 8 further includes the step of: driving the speaker with the adjusted amplification power. The method for operating a computer peripheral device according to claim 9, further comprising the steps of: receiving an audio signal of the computer system from the device end connection interface by an audio processor; and transmitting the audio by the audio processor Signals to the operational amplifier and are transmitted to the speaker via the operational amplifier.