Applicable to support OTG-enabled smart phones, tablet PCs and other mobile devices. or For Android 4.2 or higher smartphones. And For all computers Product Name: OTG dual -slot card reader mobile computer USB interface : micro usb / usb Support : SD card / micro SD card Product Dimensions : 51.5 x 19 x 11 mm (L x W x H) Weight : 8 g Specifications: A transmission interface :. USB2.0 (micro USB 5pin) + USB A Male 2 Chipset : ITE1327 3 slots : 2 slots (SD + micro SD) 4 Transmission speed :. USB2.0 transfer 480Mb / s ( standard value ) 5 Material :. ABS 6 Operating system : Android 4.2 or later , as the HOST interfaces , support for OTG function smart phones and tablet . 7 supports PC operating systems : Windows 2000,2003, XP, Vista, 7, Mac 10.45 or more above and Linux 2.4 operating system . Package included: 1x OTG SD Card Reader