This is a Bose-brand AC adapter, model PSM36W-208. I think it's for the Bose Soundock. It is in good condition but is untested since I don't have the unit to test it with. Given it's clean condition I'm confident that it will work and will give you a full refund if you're not satisfied and if you send it back to me. It includes the power cable. I guess there's two kinds of connections, a square one and a round one; this connection is round. See the pictures for yourself, thanks for looking!