(1)Do not use for charging, it is used for offering more USB ports to transfer files.
(2)The specification of the power supply is 3.5*1.35mm 5V 1A, it supports less than 1TB hard disk, if your hard disk is more than 1TB, then the power supply does not suit you.
(3)There are 9 options in this link, if you want USB 3.0 with power apply, please choose the right option you need
(4) The power supply can solve the problem of insufficient power supply, if you need work with a hard disk, then you should choose the with power supply, and please note, please don't use more than 2 hard disks at the same time.
(5) The power supply can improve the usb transmission speed, insufficient power supply will lead to reduced data transmission, error code, with power can improve reliability.
Product Features :
1. 100% brand new and high quality
2. Hot plug & play USB device
3. Fully compatible with USB specification version 3.0/2.0
4. With blue LED for power
5. ON/OFF switches activate or deactivate individual ports
6. Designed with 4-port, this compact USB 3.0 high-speed hub is small enough for travel, and cable enough to meet your connectivity needs
Product Specifications :
Item Name: USB HUB 3.0
USB Ports: 4, 7
Cable : USB 3.0 HUB (605mm)
Size : 104*35*21mm
Data Transfer Rate: Up to 5Gbps
Compatible : WindowsXP / Vista / 7 and MAC OS 9.1 or higher
Our Customers :
Sunny G. - Houston
“Product arrived. Fine, and it fuses in excellent form, best the power switches. ”
Karl R - Toronto
“Ordered August 21 arrived September 15 to Toronto, and product as described. I am overall happy with order. ”
Paul F. - Los Angeles
“Ordered, received what I paid, in excellent condition (the hub itself and the wire with USB output), all ports are working, the backlight is bright, the goods are satisfied! ”