Dimensions (L x W x H) 115 x 78 x 11.5 mm / 4.53 x 3.07 x 0.45in Texture Plastic Interface USB3.1, backward compatible with USB 2.0 Operating temp 5C(41F) to 50C(121F) Operating Voltage USB DC 5V Accessories USB3.1 cable; Quick Start Guide Operating system requirements Windows XP/Vista/7/8/8.1/10 Mac OS X 10.6 or later Linux Kernel 2.6 or later Note Connecting via USB 2.0 requires plugging in to two USB ports for sufficient power delivery. A USB Y-cable will be needed