SPECIFICATION:

Product Overview

• Brand: HP / HPE (Hewlett Packard Enterprise)
• Product Name: HP X311 400W 100-240VAC to 12VDC Power Supply
• Product Code (MPN): J9581A
• HPE Option Part Number: J9581A#ABA
• OEM Part Number / Spare P/N: 0957-2311 (also references DPS-400 series or PS-2461-1P-LF)
• Device Type: Proprietary Switch Power Supply Unit (PSU)
• Form Factor: Plug-in module (Hot-plug / Redundant) 

Power & Electrical Specs

• Total Output Power: 400 W
• Input Voltage Type: AC (Alternating Current)
• Input Voltage Range: 100 V AC to 240 V AC (Autoranging, 50/60 Hz)
• Main DC Output Rating: 12 V DC
• PoE Support: None (Designed strictly for Non-PoE switches. Keyed design prevents insertion into PoE capable chassis).
• Maximum Heat Dissipation: Approx. 434 BTU/hr (457.87 kJ/hr) under normal infrastructure load. 

Compatibility

• Supported Switches:
  • HP E3800 Switch Series (Non-PoE models e.g., E3800-24G-2SFP+, E3800-48G-4SFP+)
  • HP ProCurve 3800-24G / 3800-48G (Non-PoE)
  • Aruba 3800 Series (Non-PoE configurations

WE PROVIDE 3 MONTHS WARRANTY