4 Port USB HUB can expand one USB port to four ports and every port supplies 500MA current (total maximum) with USB 1.1/2.0 specifications. Other features include:-
high speed transfer rates 12/48Mbps, USB powered, no external power adaptor
driveless, plug & play with one power LED
supports with 95 OSF2/9/98/98SM/M3/200/XP, linux/MAC OS