(1) Not used for charging, used to provide more USB ports to transfer files
(2) The power supply specification is 3.5 * 1.35mm 5V 1A, supports hard drives less than 1TB, if your hard drive is greater than 1TB, it means that the power supply is not suitable for you
(3) The power supply can solve the problem of power supply error. If you need a hard disk drive, you need to select the power supply. Please note that you should not use more than two hard disks at the same time.
(4) The power supply can improve the transmission speed of USB. Insufficient power will reduce the transmission of data. Error codes and power supply can improve the reliability.
1. 100% new quality
2USB plug and play device
3. Fully compatible with USB 3.0/2.0
4 with bLue LED power supply
5. On/off switch enables or disables a single port
6 This compact high-speed USB 3.0/2.0 hub is designed with 4 ports, 7 ports, compact, portable, and has enough cables to meet your connection needs
Product name: USB 3.0 / 2.0 HUB
USB port: 4, 7
Cable: Cable USB 3.0 hub is about 605mm, USB 2.0 HUB is about 400mm
Size: 104*35*21mm, 164*35*21mm
Data transfer rate: up to 5 Gbps
Color: black, white
Compatible: WindowsXP/Vista/7 and MAC OS 9.1 or higher.