Brother DS-640 Mobile Scanner, 7.5 PPM, USBFeatures Time saving, fast scan speeds. Scans color and black and white documents at up to 16 ppm. On the go scanning. Powering the Brother DS 640 document scanner through the included micro USB 3. 0 cable to a laptop or PC enables scanning from virtually anywhere and makes the DS 640 highly portable for mobile professionals. Compatible with the way you work. The software included with the DS 640 document scanner allows you to scan to multiple Scan to