USB card reader+ hub,USB Combo Model: XTB0031 Features: 1. Four card slots + 3 hubs 2. USB2.0 interface,high speed data transfer rate up to480Mbps 3.Driveless, easy to install, plug and play 4. Color available:silver, black 5. Material: Plastic 6. Support SD/SDC/SDUtraMMC/CF/ MiniSD /MicroS D/T-flash /MicroSD / HS-MMC/ RS-MMC/ MMC II 7. LEDworking indicator light,compact and streamline design on its shape. 8.SupportWindows 98/2000/XP Mac os V9.2 or higher