Universal Mini 3 Ports USB 3.0 Hub High Speed Data Transfer Splitter Box Adapter For MacBook Pro PC Laptop Multi-port USB Hub Interface Type : USB 3.0Ports : 3Origin : CN(Origin)Funtion : None - Standard : USB 3.0Certification : CELength : Other - Package : Yes - Model Number : 3 Port USB Hub - Plug Standard : None - Transport Interface : USB3.0Transmission Rate : USB 3.0 port up to 480Mbps - Operating system : For Win95/98SE/Me/2000/XP/7/8/10/vista, Linux, Mac OS 8.5 and above. - Power Supply : USB 5V/600ma - External Power Supply : 5V/1.5A-2Afeature 1 : USB Hubfeature 2 : for U disk, card reader, USB mousefeature 3 : for USB keyboard, scanner, digital camera.length : about 2.17inch/55mm