i use my verizon usb/wall adapter to power my scanner rather than the usb computer. same #s as the one sold on scannermaster and i luckily had an extra. but, the cord they sent is so damn short. u can use an extension cord of course. be nice if they included a longer cable. i rarely use the wall unit anyway as i have plenty of rechargeable batteries. if i go to a hotel and want to use it as a base in the room, then i may use the wall charger.