TW201416843A - Computer device and power supply method for universal port module - Google Patents

Abstract

A computer device and a power supply method for universal port are provided. The computer device includes a universal port module, processing unit and a logic expanding unit. The universal port module includes a detecting unit and a power switch. The detecting unit detects whether the universal port module connected to an external peripheral device to provide a detecting signal. When the computer device is in normal state, the processing unit knows a connecting situation of the universal port module and the external peripheral device according to the detecting signal, and the connecting situation is recorded in the logic expanding unit. When the computer device transmits from normal state into power-saving state, the logic expanding unit provides a power switching signal to make the power switch stop for providing the power for the universal port module not connect to the external peripheral device.

Description

Power supply method for computer device and universal connection port module

The present invention relates to a computer application technology, and more particularly to a computer device for detecting the connection of a universal port module to determine whether or not to supply power.

When a computer system with a universal serial bus (USB) port (such as a desktop computer, a notebook computer, or an integrated computer) enters a shutdown or hibernation state, a chipset in the computer system (for example, a south bridge chip) These USB ports are still powered (for example, providing 5V) to sense input signals from peripheral devices, such as external human interface devices (HIDs) such as mice and keyboards. In other words, the peripheral device can be powered by the computer system via the USB port, regardless of the mode of the computer system. For example, when the computer system is in a shutdown or hibernation state, the USB port is still continuously powered to a human-machine interface device such as a mouse or a keyboard. The user can activate the computer system through a specific button on the USB keyboard or by touching the USB mouse. It returns to normal.

However, the shortcoming of the above method is that the computer system must continuously provide power on each set of USB ports, whether in the shutdown or standby state, and thus there is a power consumption problem. For example, when the computer system is in a sleep state, each set of USB ports will still consume 500uA (low power supply unit) or 2.5mA (high power supply unit), that is, 2500uW or 12.5mW of power respectively. . And now there are many on every computer system With a USB port, the tiny power consumption is reduced. In addition, computer systems usually do not have the mechanism to detect whether each USB port has a corresponding human interface device, that is, the connection status of these USB ports cannot be known, resulting in the South Bridge chip only for all USB ports. The port provides power. Therefore, the USB port of the computer system still consumes power without knowing it.

The invention provides a computer device and a universal connection port module power supply method. The computer device detects and records the connection status of each universal connection port module under normal conditions, and stops the power supply when the computer device enters the shutdown or standby state. Save power consumption by using a universal port module that is not in use.

The invention provides a computer device comprising a universal port module, a processing unit and a logic expansion unit. The universal port module includes a detecting unit and a power switch. The detecting unit detects whether the universal port module is connected to an external peripheral device to generate a detection signal. The power switch receives and provides a voltage rating to the universal port module based on the power switch signal. The processing unit and the logic expansion unit are coupled to each other. When the computer device is in a normal state, the processing unit provides the power switch signal, and according to the detection signal, the connection between the universal connection module and the external peripheral device is known, and The control logic expansion unit records the connection. When the computer device is switched from the normal state to the power saving state, the logic expansion unit provides the power switch signal according to the connection condition, so that the power switch stops supplying power to the outside. Universal connection module for peripheral devices. The logic expansion unit is continuously powered in the power saving state of the computer device.

In an embodiment of the invention, the computer device further includes: a microprocessor coupled to the processing unit and the logic expansion unit. The microprocessor receives the detection signal and in turn notifies the processing unit and the logic expansion unit about the connection of the universal port module to the external peripheral device. When the connection state of the universal connection port module and the external peripheral device is changed from the connection to the unconnected state in the power saving state of the computer device, the microcontroller adjusts the connection condition of the logic expansion unit to stop the power supply from being powered. A universal port module that is not connected by external peripherals. Wherein, the microprocessor is continuously powered in a power saving state of the computer device.

In an embodiment of the invention, the processing unit and the microprocessor communicate and control the logic expansion unit through the inner integrated circuit bus.

In an embodiment of the invention, the computer device further includes: a switching unit coupled to the processing unit and the logic expansion unit. The switching unit switches the power switch signal provided by the processing unit and the logic expansion unit according to the normal state or the power saving state of the computer device.

In an embodiment of the invention, the logical expansion unit is a GPIO expander, the universal connection port module conforms to a universal sequence bus bar specification, and the power saving state is a shutdown state or a standby state.

In another aspect, the present invention provides a computer device including a plurality of universal port modules, a processing unit, and a logic expansion unit. Each of these universal port modules includes a detection unit and a power switch. The detecting unit detects whether the universal port module and the corresponding external peripheral device A connection is made to generate a corresponding detection signal. The power switch receives and provides a rated voltage to the universal port module according to the corresponding power switch signal. The processing unit and the logic expansion unit are coupled to each other. When the computer device is in a normal state, the processing unit provides a corresponding power switch signal, and according to the corresponding detection signal, the connection between the universal port module and the corresponding external peripheral device is known, and the logic expansion is controlled. The unit records this connection. Moreover, when the computer device is switched from the normal state to the power saving state, the logic expansion unit provides a corresponding power switch signal according to the connection condition, so that the corresponding power switch stops supplying power to the unconnected external peripheral device. These multiple universal ports are modules. The logic expansion unit is continuously powered in a power saving state of the computer device.

Please refer to the above description for the remaining implementation details of this computer device, and will not be described here.

In still another aspect, the present invention provides a power supply method for a universal port module, which is suitable for a computer device having a universal port module. The power supply method includes the following steps: when the computer device is in a normal state, a power switch signal is provided to provide a rated voltage to the universal port module. Detecting whether the universal port module is connected to an external peripheral device to know the connection between the universal port module and the external peripheral device. The connection is recorded in a logical expansion unit. And, when the computer device is switched from the normal state to the power-saving state, the logic expansion unit provides the power switch signal according to the connection condition, so that the power switch stops supplying power to the universal port module not connected by the external peripheral device. The logic expansion unit is continuously powered in a power saving state of the computer device.

For the remaining implementation details of the power supply method of the universal connection port module, please refer to the above description, and no further details are provided herein.

Based on the above, the power supply method of the computer device and the universal port module according to the embodiment of the present invention detects and records the connection status of each universal port module in a normal state, that is, detects each universal port module and the external device. Whether peripheral devices are coupled to each other. When the computer device enters the shutdown or standby state, the processing unit (for example, the central processing unit or the chipset) that originally controlled the universal port module will stop operating. Therefore, the present embodiment utilizes the logic expansion unit continuously powered in the computer device. Power is supplied to the universal port module connected to the external peripheral device according to the recorded connection condition, and the power supply to the unused universal port module is stopped. Since the power expansion unit requires less power consumption in the power saving mode of the computer device than in a single universal port module, power consumption can be saved.

The above described features and advantages of the present invention will be more apparent from the following description.

In order to make the computer device more power-saving and avoid unnecessary power consumption, the computer device of the embodiment of the invention utilizes a logic expansion unit with lower power consumption in the power-saving mode, and the logic expansion unit is based on the normal mode of the computer device. The connection between the detected connection module and the external peripheral device to control the power of each universal connection module and stop supplying power to the connection module without coupling the related device, thereby saving power . The related embodiments are listed below for reference by the present embodiment.

1 is a block diagram showing a computer device 100 in accordance with a first embodiment of the present invention. The computer device 100 may be a related computer system having a connection port module, such as a desktop computer, a notebook computer, an integrated computer, and the like. The computer device 100 includes a universal port module 110_1~110_3, a processing unit 120, and a logic expansion unit 130. In this embodiment, the computer device 100 usually has one or more universal connection ports, and the universal serial bus (USB) connection port 110_1~110_3 is used as its implementation mode, that is, the universal connection mode. Groups 110_1~110_3 conform to the universal sequence bus schedule specification. FIG. 1 only shows three USB bus bars as an example of the universal port module 110_1~110_3, but the number of the universal port modules can be adjusted accordingly according to the needs of the application implementer, and is not limited. herein.

In this embodiment, each of the universal port modules 110_1 110 110_3 includes a detecting unit 140 and a power switch 150. The detecting unit 140 can detect whether the corresponding universal port modules 110_1~110_3 are connected to the external peripheral device 160 through the corresponding USB male and female connectors to generate the detection signals DS1~DS3. The detection of the detection unit 140 through the physical connector can be determined by whether the specific pin in the connector is floating or connected to a specific voltage, or can be implemented by other means, and will not be described herein.

The power switch 150 of each of the universal port modules 110_1~110_3 respectively receives corresponding power switch signals PS1~PS3, and provides a rated voltage (for example, 5V) according to the power switch signals PS1~PS3 to each universal port module. 110_1~110_3, to supply power to the external peripherals coupled to each other Device 160. This embodiment can be implemented as a power switch 150 through a single transistor or associated circuitry.

In addition, the computer device 100 further includes a switching unit 170 coupled to the processing unit 120 and the logical expansion unit 130. The switching unit 170 is configured to respectively set the first power switch signals PSN1 PSNSN3 provided by the switching processing unit 120 or the second power switch signals PSS1 PSSS3 provided by the logic expansion unit 130 according to the normal state or the power saving state of the computer device 100. The power switch signals PS1 to PS3 are transmitted to the respective universal port modules 110_1 to 110_3. In this embodiment, the switching unit 170 can be implemented by a plurality of OR gates.

Generally speaking, when the general computer device 100 is in normal operation or in a power-saving mode such as shutdown, standby, etc., the power switch signals PS1~PS3 are usually enabled to continuously supply power to the external peripheral device 160. Therefore, it causes unnecessary power consumption. In view of this, the processing unit 120 of the embodiment of the present invention transmits the logic expansion unit 130 with lower power consumption, and automatically closes when there is a power saving mode (for example, a shutdown mode or a standby mode) of the computer device 100. Corresponding universal connection ports 110_1~110_3 to the external peripheral device 160.

The various elements in the embodiments of the present invention and the manner in which they are actuated are described in detail below. The processing unit 120 and the logic expansion unit 130 are coupled to each other, and communicate with each other by the inner integrated circuit (I2C) bus and the processing unit 120 controls the logical expansion unit 130. The processing unit 120 may be a central processing unit based on the X86 architecture in a computer, a chipset, or an ARM model "TERA2321" manufactured by Advanced RISC Machines (ARM). Central processor. The logic expansion unit 130 of this embodiment takes a GPIO expander as an embodiment, for example, a GPIO expander of the type "PCA9534PW", which consumes only 660 uW, which is much smaller than a USB that maintains an electric power of 2500 uW or 12.5 mW. Connection 埠.

Thereby, when the computer device 100 is in a normal state (that is, when the processing unit of the computer device 100 can operate normally), the processing unit 120 provides the power switch signals PSN1~PSN3, and the switching unit 170 and the power switch signals PSN1~PSN3 The power switch signals PS1~PS3 are transmitted to the corresponding universal port modules 110_1~110_3. The processing unit 120 also learns the connection between the universal port module 110_1~110_3 and the external peripheral device 160 according to the detection signals DS1~DS3 detected by the detecting unit 140, and the processing unit 120 transmits the I2C control logic. The expansion unit 130 records the above connection.

In this embodiment, when the computer device 100 is in a normal state, the external peripheral device 160 (for example, a USB keyboard or a USB mouse) has been coupled to the first universal port module 110_1 of FIG. The port modules 110_2, 110_3 are not coupled to corresponding external peripherals. Thereby, the processing unit 120 passes through the inner integrated circuit bus (I2C) to control the logical expansion unit 130, and records the connection status in the corresponding flag register in the logical expansion unit 130.

When the computer device 100 is switched from the normal state to the power-saving state, at this time, because of the power-saving mode, the processing unit 120, which has a high power consumption ratio, stops operating because the power supply is stopped. At this time, the logical expansion unit 130 provides power according to the connection condition stored in the internal flag register. The switching signals PSS1 to PSS3, the switching unit 170 and the power switching signals PSS1 to PSS3 are used as the power switching signals PS1~PS3 for transmission to the corresponding universal port modules 110_1~110_3. Thereby, the logic expansion unit 130 can stop the power switch 150 among the universal port modules (for example, the universal port modules 110_2, 110_3) that are not connected by the external peripheral device 160, thereby avoiding unnecessary consumption of power. Of course, the logic expansion unit 130 continues to be powered by the computer device 130 in the power saving state of the computer device 130, thereby implementing the embodiment.

In particular, since the logic expansion unit 130 only needs 660 uW of electric power in the power saving mode of the computer device 100, the operation can be maintained, and each universal port module 110_1~110_3 (for example, a USB port module) It requires 2500uW or 12.5mW of electric power. Therefore, unless the common external peripheral device 160 is inserted into each of the universal connection ports 110_1~110_3 on the computer device 100, a large amount of electric energy is consumed. The electrical power consumption of the embodiment of the present invention is reduced.

In addition, if the user inserts the external peripheral device 160 from the universal port module 110_1~110_3 in the power saving mode of the computer device 100, the current computer device 100 cannot read the type of the external peripheral device 160 from the power saving mode. And drive it. Therefore, even if the computer device 100 supplies power to the corresponding universal port module 110_1~110_3 at this time, the inserted external peripheral device 160 cannot operate, so the embodiment does not judge in the power saving mode of the computer device 100. Is there an external peripheral device 160 inserted into the universal port module 110_1~110_3.

The first embodiment can monitor the coupling of the universal port modules 110_1 110 110_3 in the normal state of the computer device 100, thereby turning off the unused universal ports 110_1~110_3 in the power saving mode of the computer device 100. . However, if the user removes the external peripheral device in the power saving mode of the computer device 100, the connection between the universal connection port modules 110_1~110_3 and the external peripheral device 160 in the logic expansion unit 130 cannot be adjusted in the power saving mode. Therefore, the corresponding universal port modules 110_1~110_3 cannot immediately stop supplying power in the first embodiment, thereby consuming some micro power. Accordingly, the present invention proposes a second embodiment to solve the above problems.

2 is a block diagram showing a computer device 200 in accordance with a second embodiment of the present invention. The second embodiment of the present invention is similar to the first embodiment in that the computer device 200 further includes a microprocessor 290 and a second switching unit 280. Based on the hardware architecture of the computer device 200, it is generally detected whether the universal port module 110_1~110_3 is connected to the external peripheral device 160 or not by a separate microprocessor 290 or an associated embedded chip. That is, the microprocessor 290 is coupled to the processing unit 120 and the logic expansion unit 130. The microprocessor 290 can communicate with the processing unit 120 through the internal integrated circuit bus (I2C) and control the logic expansion unit 130 to assist in adjusting the internal data of the logical expansion unit 130.

Therefore, the microprocessor 290 of the second embodiment receives the detection signals DS1 DS DS3 and in turn notifies the processing unit 120 and the logic expansion unit 130 about the connection between the universal port modules 110_1 110 110_3 and the external peripheral device 160.

In other embodiments, when the processing unit 120 is in the normal mode, the detection signals DS1 to DS3 may be received by themselves to learn about the connection between the universal connection ports 110_1 110 110_3 and the external peripheral device 160. In addition, when the computer device 200 is switched from the normal state to the power saving state, the processing single edge 120 generally records the connection condition in the flag register of the expansion unit 130 as in the first embodiment.

In addition, when the power saving state of the computer device 200 is detected, if the microprocessor 290 detects that the connection between the universal port module (for example, 110_1) and the external peripheral device 160 is changed from the connection to the unconnected state, that is, When the user removes the external peripheral device 160 from the computer device 200 in the power saving state of the computer device 200, the microcontroller 290 can cooperate with the micro control signal MCS and the second switching unit 280, or utilize the inner integrated body. a circuit bus (I2C) to adjust the connection recorded inside the logic expansion unit 130, so that the power switch 150 in the universal port module 110_1 stops supplying power to the universal port module 110_1 that is not connected by the external peripheral device 160. .

If the microcontroller 290 uses the inner integrated circuit bus (I2C) to adjust the flag register inside the logic expansion unit 130, the power switch signals PSS1~PSS3 can be directly adjusted without the assistance of the second switching unit 280. signal. On the other hand, the microcontroller 290 of the embodiment of the present invention uses the micro control signal MCS and the hardware structure in the second switching unit 280 to adjust the power switch signals PSS1 PSSAS3 to the voltage switch signals PSM1 PSMSM3, for example, the second The switching unit 280 is implemented in a plurality of AND gates. Thereby, the first switching unit 170 will be at this time The adjusted voltage switch signals PSM1 to PSM3 are transmitted as voltage switch signals PS1 to PS3 to the corresponding common bus ports 110_1 to 110_3. Therefore, the microprocessor 290 in the second embodiment will continue to be powered in the power saving state of the computer device 200.

The above embodiment can also be integrated into a power supply method for a universal port module, which is applicable to the first and second embodiments. FIG. 3 is a flowchart of a power supply method of a universal port module according to an embodiment of the present invention. Referring to FIG. 2 and FIG. 3, in step S310, when the computer device 200 is in a normal state, the processing unit 120 provides power switch signals PSN1 PSPSN3 to enable the power switch 150. The rated voltage is supplied to the corresponding universal port modules 110_1~110_3. In step S320, the processing unit 120 detects whether the universal port modules 110_1 110 110_3 are connected to the external peripheral device 160 to learn the connection between the universal port ports 110_1 110 110_3 and the external peripheral device 160.

In step S330, the processing unit 120 records the connection between the universal port modules 110_1 110 110_3 and the external peripheral device 160 in the logical expansion unit 130. In step S340, the processing unit 120 determines whether the computer device 200 is to enter a power saving mode (for example, a shutdown mode or a standby mode). If NO in step S3430, the process returns to steps S320-S330 to continuously update the connection situation in the logical expansion unit 130, or to update the connection condition in the logical expansion unit 130 for a period of time before the computer device 200 transitions to the power-saving state.

When the step S3430 is YES, that is, when the computer device 200 is switched from the normal state to the power saving state, the process proceeds to step S350, the logical expansion unit. The 130 provides the power switch signals PSS1 PPSS3 according to the connection between the universal port modules 110_1 110 110_3 and the external peripheral device 160, so that the corresponding power switch 150 stops supplying power to the universal connection module that is not connected by the external peripheral device 160. Group 110_1~110_3. The logic expansion unit 130 continues to be powered in the power saving state of the computer device.

In step S360, in the power saving state of the computer device 200, the microprocessor 290 detects and determines whether the connection between the universal port module and the external peripheral device 160 is converted from the connection to the unconnected state. If not, the process returns to step S350 and the process proceeds to step S360. Unless the computer device 200 is about to return to the normal state, the process returns to step S310.

When the microprocessor 290 detects that the connection between the universal connection port module (for example, 110_1) and the external peripheral device 160 is changed from the connection to the unconnected state, the process proceeds from step S360 to step S370, and the microcontroller 290 Adjusting the connection status recorded in the logic expansion unit 130, or adjusting the power switch signals PSS1~PSS3 as the power switch signals PSM1~PSM3 through the assistance of the second switching unit 280 and the micro control signal MCS, so that the corresponding power switch 150 is stopped. Power is supplied to a universal port module (eg, 110_1) that is not connected by external peripheral device 160. For other related descriptions that are not disclosed in this embodiment, please refer to the foregoing first and second embodiments, and details are not described herein again.

In summary, the power supply method of the computer device and the universal port module according to the embodiment of the present invention detects and records the connection status of each universal port module under normal conditions, that is, detects each universal port module. Whether it is coupled to external peripheral devices. When the computer device enters shutdown or is on standby In the state, the processing unit (for example, the central processing unit or the chipset) that originally controlled the universal port module will stop operating. Therefore, the present embodiment utilizes the logic expansion unit continuously powered in the computer device according to the recorded connection condition. Power is supplied to the universal port module that is connected to the external peripheral device, and power is supplied to the unused universal port module. Since the power expansion unit requires less power consumption in the power saving mode of the computer device than in a single universal port module, power consumption can be saved.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

100, 200‧‧‧ computer devices

110_1~110_3‧‧‧Common connection module

120‧‧‧Processing unit

130‧‧‧Logic expansion unit

140‧‧‧Detection unit

150‧‧‧Power switch

160‧‧‧External peripheral equipment

170‧‧‧Switch unit

280‧‧‧Second switching unit

290‧‧‧Microprocessor

DS1~DS3‧‧‧Detection signal

PS1~PS3, PSN1~PSN3, PSS1~PSS3, PSM1~PSM3‧‧‧ Power switch signal

MCS‧‧‧ micro control signal

S310~S370‧‧‧Steps

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a block diagram showing a computer device in accordance with a first embodiment of the present invention.

Figure 2 is a block diagram showing a computer device in accordance with a second embodiment of the present invention.

FIG. 3 is a flowchart of a power supply method of a universal port module according to an embodiment of the present invention.

200‧‧‧ computer equipment

110_1~110_3‧‧‧Common connection module

120‧‧‧Processing unit

130‧‧‧Logic expansion unit

140‧‧‧Detection unit

150‧‧‧Power switch

160‧‧‧External peripheral equipment

170‧‧‧Switch unit

280‧‧‧Second switching unit

290‧‧‧Microprocessor

DS1~DS3‧‧‧Detection signal

PS1~PS3, PSN1~PSN3, PSS1~PSS3, PSM1~PSM3‧‧‧ Power switch signal

MCS‧‧‧ micro control signal

Claims (10)

A computer device includes: a universal port module, wherein the universal port module includes: a detecting unit that detects whether the universal port module is connected to an external peripheral device to generate a detection signal; and a power switch to receive And according to the power switch signal to provide a rated voltage to the universal port module; the processing unit and the logic expansion unit, the processing unit and the logic expansion unit are coupled to each other, when the computer device is in a normal state, the processing unit provides the The power switch signal controls the logic expansion unit to record the connection condition according to the detection signal to know the connection between the universal connection port module and the external peripheral device, and when the computer device is switched from the normal state to the power saving state In the state, the logic expansion unit provides the power switch signal according to the connection condition, so that the power switch stops supplying power to the universal port module not connected by the external peripheral device, wherein the logic expansion unit is in the computer device Power is continuously supplied in the power saving state. The computer device of claim 1, further comprising: a microprocessor coupled to the processing unit and the logic expansion unit, the microprocessor receiving the detection signal and informing the processing unit and the logic The expansion unit has a connection status between the universal connection port module and the external peripheral device, wherein when the power saving state of the computer device is in use, and the connection between the universal connection port module and the external peripheral device is converted by the connection Is not connected The microcontroller adjusts the connection of the logic expansion unit to stop the power switch from supplying power to the universal port module that is not connected to the external peripheral device, wherein the microprocessor is in the province of the computer device It is continuously powered in the electrical state. The computer device of claim 1, further comprising: a switching unit coupled to the processing unit and the logic expansion unit, wherein the processing unit and the logic expansion are switched according to the computer device being in a normal state or a power saving state. The power switch signal provided by the unit. A computer device includes: a plurality of universal port modules, wherein each of the plurality of universal port modules includes: a detecting unit that detects whether the universal port module is connected to a corresponding external peripheral device Generating a corresponding detection signal; and a power switch receiving and providing a rated voltage to the universal port module according to the corresponding power switch signal; a processing unit and a logic expansion unit, the processing unit and the logic expansion unit being coupled to each other, When the computer device is in a normal state, the processing unit provides a corresponding power switch signal, and according to the corresponding detection signal, the connection between the plurality of universal port modules and the corresponding external peripheral device is known. Controlling the logical expansion unit to record the connection situation, and when the computer device transitions from the normal state to the power saving state, the logic expansion unit provides the corresponding power switch signal according to the connection condition, so that the corresponding power switch is stopped. Power is supplied to the external unit that is not corresponding The plurality of universal port modules connected to the peripheral device, wherein the logic expansion unit is continuously powered in a power saving state of the computer device. The computer device of claim 4, further comprising: a microprocessor coupled to the processing unit and the logic expansion unit, the microprocessor receiving the corresponding detection signal and informing the processing unit and The logic expansion unit has the connection status of the plurality of universal connection ports and the corresponding external peripheral device, wherein when the computer device is in a power saving state, the plurality of universal connection ports and the plurality of universal connection ports are When the connection condition of the corresponding external peripheral device is changed from the connection to the unconnected, the microcontroller adjusts the connection condition of the logical expansion unit, so that the corresponding power switch stops supplying power to the external peripheral device that is not corresponding. The plurality of universal port modules are connected, wherein the microprocessor is continuously powered in a power saving state of the computer device. The computer device of claim 5, wherein the processing unit and the microprocessor communicate and control the logical expansion unit through an inner integrated circuit bus. The computer device of claim 4, further comprising: a switching unit coupled to the processing unit and the logic expansion unit, wherein the processing unit and the logic expansion are switched according to whether the computer device is in a normal state or a power saving state. The power switch signal provided by the unit. The computer device according to claim 4, wherein the logic expansion unit is a GPIO expander, the universal port module conforms to a universal sequence bus bar specification, and the power saving state is a shutdown state or a standby state. A power supply method for a universal port module is applicable to a computer device having a universal port module, the power supply method comprising: providing a power switch signal to provide a rated voltage to the universal port when the computer device is in a normal state? a module; detecting whether the universal port module is connected to an external peripheral device to learn the connection between the universal port module and the external peripheral device; recording the connection condition in a logical expansion unit; and when the computer When the device is switched from the normal state to the power saving state, the logic expansion unit provides the power switch signal according to the connection condition, so that the power switch stops supplying power to the universal port module not connected by the external peripheral device, wherein the The logical expansion unit is continuously powered in the power saving state of the computer device. The power supply method of claim 9, further comprising: adjusting the power saving state of the computer device, and changing the connection between the universal port module and the external peripheral device from the connection to the unconnected state The connection of the logical expansion unit is such that the power switch stops supplying power to the universal port module that is not connected by the external peripheral device.