This listing is for a MultiTech Systems MT2834ZDXb Data/Fax Modem. It was pulled from a working environment, power tested, and powers on as it should. No further testing has been performed on this device. It requires a 9V adapter which will be included with purchase. There are signs of wear on this item from previous use. All photos are of the item that you will receive. We do not provide tech support or any software that is not already installed on this device. If you have any questions, feel free to contact me.