The Brother DS-640 mobile scanner is ideally suited for on-the-go / small office / home office professionals with its compact, mobile design & simple workflow applications. The compact size & portability of the DS-640 combined with its fast scan speeds & image optimization features, make it a perfect fit to be used on the road or to be used in the home or small office, providing compatibility with the way you work. The DS-640 offers plug & play convenience. Use your laptop or PC to power the DS-640 by connecting the included micro USB 3.0 cable. The same connection allows you to seamlessly scan your hard copy documents directly to your computer. Scan Size (W x H): 8.5" x 72"; Color Bit Depth: 48-bit; Connector / Port / Interface: Micro USB 3.0; Optical Resolution: 600 dpi.