uxcell PC Laptop Black On/Off Switch 4 Ports Blue LED 480Mbps USB 2.0 Hub Product Name : USB Hub;Ports : 4;LED Number : 1 Light Color : Blue;Interface : USB 2.0, Compatible with USB 1.1;Data Transfer Rate : up to 480Mbps System Requirement : Windows: XP/ME/2000/98 SE/ Vista/Win 7;Cable Length : 55 cm / 21.6";Hub Size : 8.8 x 2.3 x 2 cm / 3.4" x 0.9" x 0.4" (L*W*T ) Main Material : Plastic, Metal;Color : Black Net Weight : 36g;Package Content : 1 x USB Hub