Features:100% brand new in the original packing 7 port high speed USB 2.0 HUBFully compliant with USB specification version 2.0 Hot plug and play USB device Interface: USB 2.0 Compatible with USB 1.1 Data transfer rate: 1.5Mbps/12Mbps/up to 480Mbps Bus-power limit current protection: 500mA Material: plastic/metal System requirement: Windows: XP， ME， 2000， 98SE， 98， Vista， 7Macintosh: Mac OS x 10.2 Linus 2.4 later version Packing content:1 x 7 port includeds USB 2.0 Hub (accessory only)