Power Option # Manufacturing Part # Description Previous Part # SECX9PS41Z 300-2234 [C] Type A236 720 Watt AC Input Power Supply, n/a SECX9PS11Z [S] 300-2015 [C] Type A221 658 Watt AC Input Power Supply, n/a n/a 300-2137 [C] Type A236 720 Watt AC Input Power Supply, n/a n/a 300-2186 [C] Type D218 660 Watt DC Input Power Supply, n/a n/a 371-4650 [C] Energy Storage Module (ESM), n/a n/a 501-7696 [F] Power Distribution Board, n/a n/a 511-1604 8 [F] Power Distribution Board n/a