SIZE： 16.8X23.8mm MEAS： 56X45X42.5CM 100个/CTN GW： 10.5KGS NW： 9.3KGS Have four USB ports, support 2.0 version or 1.1 version Support high-speed 480Mbps, Full-Speed 12Mbps, Low Speed 1.5Mbps Protection for current overload. Support OS:IBM PC/MACM PC / MAC / MAC Fully compatible with all USB devices. E.g. scanner, camera, DV, MP3... Supports self-powered and bus-powered mode Delicated designed,exquisite appearance,especially agree office using,also can meet desk computer by extend line; Hiding design enable USB line to be hided into the saucer; Various colour selection,single or multi-colour for LED; Flowery and individual LOGO can be designed in the middle,suppliers and distributors can choose it as promoting and advertising gifts; Considerate design,no national bunderies propagandization,wonderful promotion gift