Features:
1) 4-Port USB 3.0 Hub at 5.0Gbps - backwards compatible with USB 2.0 and 1.1 devices
2) Supports Windows 8 / 7 / Vista / XP / 2003 / 2000 / ME， Mac OS X
3) Plug and play - does not require any software， drivers， or complicated installation process.
4) The connection cable is attached to the hub - no need to worry about leaving it behind or losing it.
5) Bus powered - does not require an AC adapter - compatible with Microsoft Surface， Ultrabooks and MacBook Air