... it alone and it also works as an automatic feeding scanner when use with the docking stationWith batteries & SD card, it ... , 0.3mmUSB port USB 2.0 high speed Power source Scanner:3xAAA batteries or USBDock:6xAA batteries or USB 5VUSB mass ... or above List of accessory USB cable, Scanner, Docking station, CD, User Manual ,Pouch auto feed portable scanner, own backlight, CIS Sensor type