Features：• Sleek Apple-style design ideal For Mac Pro， iMac， MacBook Air， MacBook Pro， MacBook， and Mac mini • Adds 4 USB 3.0 ports to your computer; Built-in surge protector safeguards your devices • Easy to set up， Plug & Play， Hot swappable • Saves on syncing time with data transfer rates of up to 5 Gbps • Bus Powered - does not require an AC adapter • Compatible with USB 2.0 and 1.1 specifications. System requirements• Mac OS X 10.6 & higher • Windows 98SE /ME /2000 /XP /Vista /7/8 • Linux 2.4 or above Package contents• USB 3.0 Premium 4 Port Aluminum USB Hub