1, USB Hubs are devices that provide extended communication, if the Hub can drive a 2.5-inch mobile hard drive when not connected to an external power supply depends mainly on the power supply capacity of the computer expansion port!
2.Generally, 2.5-inch mobile hard drives need to be powered by the computer or Hub, and 3.5-inch mobile hard drives need to be equipped with a high-power dedicated power supply; please do not connect such devices directly.
4, many compatible machine chassis front USB port, due to more than one adapter, plus wire and other material problems, the power supply capacity is even worse; very easy to cause mobile hard disk can not be used or even loss of data, damage to the hard disk;.
5.If your mobile hard drive makes a "tada" sound, it is caused by insufficient power supply; for your mobile hard drive, it is recommended that it is best to connect the USB Hubs to the motherboard integrated USB port on the back of the chassis to ensure better contact and power supply
6, when using the mobile hard drive, please use the original usb power cable. Ordinary usb cable, thin wire diameter, high loss, can not meet the power supply needs!