Specifications: 

1) Expands four USB port supply up to 550mA current per port

2) Uses a second generation controller

3) No external power supply necessary

4) Driverless, hot plug and play    

5) Internal over current protection circuits

6) Support USB 1.0/1.1, USB2.0, full speed up to 12Mbps

7) OS Support: Windows 95 OSR2/98SE/Me/2000/XP, Linux 2.4 and Mac or over

8) Chains up to 127 drives



Packing: blister packing