4 Ports High Speed USB 2.0 HUB Features High Speed USB 2.0 4 ports HUB Featuring over current protection Fully compatible with USB 2.0 and 1.1 specification Supports Windows 98/98SE/2000/ME/XP/7, Max OS x 10.2 and Linux 9 Plug and Play, no driver is needed Work without an external power adapter as a passive HUB with low power devices* (Provides up to 100mA to each port)