I purchased this here, but it won't work no matter what I try in my environment, so I'm selling it as junk. Includes AC adapter. Please consider if you know about this kind of thing. The PreSonus FaderPort, equipped with a motorized fader, makes mixing and transport operations easy. - Brand: PreSonus - Model Name: FaderPort - Connectivity: USB, Foot Switch - Features: Mixing Control, Transport Control - Parameters: Pan, Solo, Mute, Record Button - Fader: Motorized Fader Thank you for looking.