KDLINKS 5Gbps 4 Ports Super Speed USB 3.0 Hub for Ultra Book, MacBook Air, Windows 8 Tablet PC - BLACK NEW VIA VL812 Chipset Solution with lastest developed 2015 version firmware for much better PC/MAC support 4-Port super high speed USB 3.0 supports transfer rate up to 5Gbps, 10x faster than USB 2.0. Backward compatible with any USB 2.0/1.1 devices Plug and Play and Hot Swap compatible; No driver required; Overcurrent detection and protection Bus Powered - does not require an AC adapter - compatible with Microsoft Surface, Ultrabooks and MacBook Air For PC, Ultra Book, MacBook Air, Windows 8 Tablet PC and Most Other Devices with USB Port; Supports: Windows 8/ 7/ Vista/ XP/ 2000 /2003/ME and Mac OS X