Flexdock turns a Motion Computing J3500 or J3400 Tablet PC into a desktop PC. Charges Tablet batteries when docked and includes a charging bay for a extra battery. It also has DVI-D port, Audio In/Out, Ethernet, 4 USB ports & AC Power Pack. Use in a desktop environment, arm mounts, wall mounts or medical carts. 100mm VESA hole-pattern for mounting.