Specifications‎:‎Super speed USB 3.1 up to 5 Gbps data transfer rate‎.‎Perfect compatible for new MacBook & Google Chromebook‎.‎Convert all your standard USB A device to USB‎-C Type C device‎.‎Smaller‎,‎ smarter and more convenient‎.‎ Type‎:‎ AdapterMaterial‎:‎ Aluminum Alloy ShellConnector 1‎:‎ USB 3.1 type C MaleConnector 2‎:‎ USB 3.0 type A FemaleCompatible Systems‎:‎ for WinXP/2003/VISTA/2008/Windows 7/WIN8 32/64BIT/MACLength‎:‎ 31mm/1.22‎"‎ ‎(‎Approx‎.‎‎)‎ Notes‎:‎Due to the light and screen setting difference‎,‎ the item‎'‎s color may be slightly different from the pictures‎.‎Please allow slight dimension difference due to different manual measurement‎.‎