SR/ESS 2500 Watt AC Power Supply for the SR/ESS AC Split Power Shelf. For 1 + 1 redundancy for the SR-12/ESS-12, four (4) supplies required. For 1+ 1 Redundancy on the ESS-6: two (2) supplies required and two SR/ESS AC Split Power Shelf Blanks (recommende

SR/ESS 2500 Watt AC Power Supply for the SR/ESS AC Split Power Shelf. For 1 + 1 redundancy for the SR-12/ESS-12, four (4) supplies required. For 1+ 1 Redundancy on the ESS-6: two (2) supplies required and two SR/ESS AC Split Power Shelf Blanks (recommended) (sold separately). One (1) SR/ESS 2500W AC Power Supply Cord required for each Power Supply (sold separately).