*Complying with Universal Serial Bus (USB) Revision 1.1 or 2.0

*One upstream port (USB A-male) and three downstream ports (USB-B female) as standard.

* Two  PS2 port for Mouse and Keyboard

*Supports both full-speed (480Mbps) and low-speed (12Mbps) transfer rates

*Truly plug-and-play automatic system configuration

*self-powered (driving +5VDC total mini.500mA from host PC) no external power source needed.

*Working with Windows 98/98SE/2000/Me and Mac OS8.5~(iBook, PowerBook, iMac, G3,G4)

*For iMac and IBM PCs