What should I do if the USB device exceeds the power limit of its hub port?

The solution to this problem is as follows: This is a power problem, and USB devices consume up to 500 milliamps (mA) each time they are connected. If a device tries to consume more current than this, the operating specification will call the corresponding function to disable a specific port until the system power is turned off and then turned on (this is called a "suspended" port). 1. If possible, add an external power supply to the USB device. You can use an active USB hub, which is not very expensive, about 100 yuan. 2. Connect both connectors: generally, there is one connector on one side and two connectors on the other side of the usb cable of the mobile hard disk. Plug one end into your hub and the other two ends into the usb interface of the computer, which can solve the problem of insufficient power. Plug in both USB plugs on the mobile hard disk, it may be that the mobile hard disk is low in power! This is actually to get power from the keyboard port, that is, PS/2 port (USB cable comes with a PS/2 port). 3. Short circuit: Generally, the front USB interface of the chassis is short circuit (wires or interfaces are possible, and there may be conductive foreign objects in the front and rear interfaces). Unplug the front connector from the motherboard to see if it is ready. Or the usb interface is plugged in and the internal data line is short-circuited, just separate the two wires of the usb interface. If it is a chassis usb, just disconnect the cable on the main version. 4. Try not to use the hub when moving the hard disk: the USB front port is easy to run out of power (except the power provided by the Hub). Try plugging it into the USB port on the back of the chassis. If you use USB hub, it will be shunted, and the current is not enough to drive USB devices. If your mobile hard disk is 2.0. Using a hub will affect the speed even more. 5. Dust removal: For all usb ports, back, front and pins in the motherboard, including all connectors.