Compliant with PC Card 32-bit CardBus Type II Standard Fully Plug & Play and Hot Swappable Support Windows 98SE/ME/2000/2003/XP/Vista/7, and MAC OS USB 2.0 Interface 4 USB Type-A ports Compliant with USB 2.0/1.1 Specification Data transfer rate: High Speed 480Mbps, Full Speed 12Mbps and Low Speed 1.5Mbps supported Optional 5V DC adapter for high current consumption devices Package Contents: 1 x 4-Port USB CardBus 1 x USB Charger Cable 1 x CD