1.     TheUSB HUB have four ports and divide USB interface into four branches,so it is not similar to neighbouring form that of common USB and USB flash, so its easy to connect and mating and unmating for width USB

2.     Upstream port (USB A) becomes flange interface, connecting computer. Downstream ports (USB A)becomes concave interface

3.     It support USB2.0 of 480Mbpx transfer rate and USB1.1

4.     It support Windows Vista, XP (after SP)/2000 (after SP4) and Mac OS X (after 10.2) system with USB 2.0 interface, It can’t support Windows Me, 98, MacOS 8.6 to 9.x by high-speed.

5.     It provide connected USB devise power from computer USB interface.

6.    It needing correspondence to interface of high-speed USB

7     Current: less than 100mA per port

8     Dimensions (W x D x H): 45 x 32 x 20mm

9     Cable length: 100mm

10   Color:  Red / White / Black