... power up to 500mA each port4. Extensively compatible with scanner, digital camera, digital vidicon, optical mouse, Keyboard, USB flash disk,etc.5. Supports ... systems : Windows Vista/XP/2000/ME/98/95, Mac OS 8.6 and above, Linux 2.4.X* 4port compact USB2 ... 1.1or 2.0 perpherals such as USB mouse, scanner, digital camera, digital vidicon, audio-system, display, U disk,etc* CE and Rohs ...