... input device, and so on.3.With Second USB HUB controller, no driver or plug support the ... swap, supports up to 127 USB devices, all good levels of quality electronic devices ... 5.Operating Systems : Win95 osR298SE2000XP, Linux2.4 and Mac os8.5, VISTA version. 6.Support for data transmission ... 8.Lovely interesting, ABS materials, light use. 9.USB plug and play, no need for external power. ...