Interface type: usb type c male and usb standard type a female using the latest type-c usb3.1 interface technology design usb 3.1 type-c adapter for 3 a mother otg conversion can be positive and negative plug the latest interface. type-c interface contains 24pin terminal, it supports reverse plug. ultra-thin design, mini size. it supports otg function, you can let type-c devices outside the u disk mouse and other peripherals. (note:your device must support the otg function.) usb3.1 type-c male to usb3.1 female otg data cable for new macbook 12 usb 3.1 high-speed supports up to 10gbps data rate perfectly compatible with new macbook, nokia n1 and google chromebook, mobile phone hard disk drive .etc convert all your standard usb a device to usb-c type c device and connect to macbook and chromebook by connecting the u disk, the phone can read the information in the u disk.