DuraComm LP-25 switching power supply.  One of the most compact supplies you'll find, measuring 1.75" high, 7" wide, 7.5" deep. Output: 13.8v, 20 Amp continuous, 25 Amp surge.  Input: 100-120VAC 5.2 Amps.  Used, and may have a scratch or two or a paint spot on the case, but overall in nice condition. As you can see in the photo, it uses a standard AC cord.  In the interest of saving postage, I'm not including a power cord, because if you're like me, you have several lying around anyway.