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USB device external method

External power supply method for USB devices
Along with the continuous improvement of various technical specifications of USB devices, its working current is also smooth and long . For example, some mobile hard disks with extremely fast speeds sometimes have a working current of 1A, which exceeds the normal power. Double, so it is not very realistic to rely solely on the USB interface to provide enough power for USB devices. For this reason, when using high-power USB devices, we must equip them with a separate external power supply to ensure the stability of USB devices and computer systems.
Interface replacement
In the 1920s, many USB device manufacturers, in order to make their USB devices have enough “usefulness”, often provided several different connection interfaces for USB devices, once the USB device could not be USB When you have enough power in the interface, you can use other ports that consume less power to connect, thus ensuring that the USB device can be used normally. For example, when the USB interface of some mobile hard disks is connected to the old motherboard, it often does not work properly, but if you connect to the computer with another pS 2 interface, the mobile hard disk will work normally.
Reduced power method
Under normal circumstances, the power supply of each USB port in the motherboard is 0.5A. If the rated current of the USB device exceeds this standard during normal operation, the motherboard will not be able to accurately identify the USB device; at this time, the only feasible method It is to use a USB device with low power consumption or a USB device with independent power supply to ensure the normal operation of the USB device.
Exclusion method
The so-called “excluding the opposite method” is to remove other USB devices that are temporarily unavailable from the USB port of the motherboard, leaving only the USB device that needs to work urgently, so that the motherboard can separately provide the source of power for the USB device. To ensure that the device is working properly. Considering that each of the two USB ports in the new motherboard is grouped, each group is powered by a separate power source, so when other USB devices are plugged into the same port as the current USB device, then the current USB device is from the motherboard. The power energy gained in this will be affected, so when you find that the current USB device is underpowered, be sure to unplug other USB devices that are not used temporarily, or plug it into another set of USB ports.

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