FREEGENE 4-Port USB 2.0 Hub with Individual Power Switches and LED Indicators Type: USB Standards: USB 2.0/1.1 Max Devices Supported: 127 Ports: 4 x USB 2.0 Transfer Rate: 400/480Mbps LEDs: Power/Activity Power Input: 5V DC Operating System Supported: * Mac OS 9.1 & higher, Windows 98SE /ME /2000 /XP /Vista /7/8, Linux 2.4 or above