DEC H7821-00 180 WATT POWER SUPPLY FOR DEC MICROVAX 3100 MODEL 10 OR MODEL 10E SYSTEMS,  OR SZ12 DRIVE ENCLOSURE.  FULLY TESTED, REFURBISHED & FULLY FUNCTIONAL,  30 DAY WORKING WARRANTY.  ITEM WILL BE PROFESSIONALLY FOAM PACKAGED TO ENSURE SAFE SHIPMENT.