-Plug Type: USB A type (male) x4; USB A type (male)x1 - POWER: Bus power (Dv5 v.500mA); Over current protection function - Supporting both full - speed (12Mbps) and low - speed (1.5Mbps) - Most suitable for notebook, PC, PAD, handheld PC, etc. - Compatible: Window XP, 2000, Me, 98SE, 98, 9.1, 9.0, 8.6, Mac OSX, 10.1 - Size:4.4*3.6*3.0 cm