... each port4. Extensively compatible with scanner, digital camera, digital vidicon, optical mouse, Keyboard, USB flash disk,etc.5. Supports up to 127 ... OS 8.6 and above, Linux 2.4.X* 4port compact USB2.0 hub is the ideal companion for your laptop ... connecting USB 1.1or 2.0 perpherals such as USB mouse, scanner, digital camera, digital vidicon, audio-system, display, U disk ...