HP 0957-0051 - Switching power supply - 140-278VAC input, 47-67Hz - Three DC outputs, 440 watts - Includes 25KHz module and battery backup Retail
HP J8168-69001 - ProCurve 600 Redundant Power Supply / External Power Supply (RPS/EPS) - Has six RPS ports for backup power for supported ProCurve switches and two EPS ports for Power over Ethernet (PoE) for supported PoE switches - For RPS power ONL Retail
HP J8168-69101 - ProCurve 600 Redundant Power Supply / External Power Supply (RPS/EPS) - Has six RPS ports for backup power for supported ProCurve switches and two EPS ports for Power over Ethernet (PoE) for supported PoE switches - For RPS power ONL Retail
