HP 403781-001 379123-001 399771-001 ORIGINAL SERVER POWER SUPPLIES DPS-800GB A 1000WATT DL380 G5

Original HP 1000-Watt High-Efficiency Redundant Power Supply

Option PN: 379123-001/379124-001 | Spare PN: 403781-001 | Model: DPS-800GBA, HSTNS-PR01 | 1000W

The HP 403781-001 is the standard high-wattage power supply unit (PSU) for the Hewlett Packard Enterprise ProLiant DL380 Gen5 (G5) and ML370 Gen5 server series. These units are designed for "Hot-Plug" redundancy, allowing you to replace a failed power supply or add a second one for load balancing without ever powering down the server.

📊 Technical Specifications

• Wattage: ⚡ 1000 Watts (at 200–240V) / 800 Watts (at 100–120V)

• Input Voltage: 🔌 100V – 240V AC (Auto-sensing)

• Efficiency: 📈 80 PLUS Gold (Equivalent for its era)

• Redundancy: 🔄 Hot-Swappable / Redundant (1+1)

• Form Factor: 📏 Proprietary HPE G5 "Common Slot"

• Cooling: 🌬️ Internal high-velocity cooling fan

✅ Product Overview

• The "Common Slot" Era: While this PSU is specific to the Gen5 era, it paved the way for HPE’s highly successful "Common Slot" design. It features a tool-less handle (the blue lever) that makes removal and installation a 5-second task.

• Intelligent Power Management: When two of these are installed in a DL380 G5, the server’s Integrated Lights-Out (iLO 2) management chip can balance the load between them or put one into a "standby" mode to save electricity when the server's power draw is low.

• Auto-Sensing Input: This unit is globally compatible. It will automatically detect whether it is plugged into a standard 110V wall outlet or a 220V data center PDU. Note: To achieve the full 1000W output, it must be connected to a 200-240V power source.

• Robust Protection: Includes built-in circuitry to protect the server's motherboard against over-voltage, under-voltage, and short-circuit events.

📦 Compatibility & Use Case

• Primary Systems: * HPE ProLiant DL380 G5

  • HPE ProLiant ML370 G5

  • HPE ProLiant DL385 G2 / G5

• Ideal Use Case: Required for servers configured with high-power components, such as dual Intel Xeon 5400-series processors, a full bank of 18 FBDIMM memory modules, and multiple high-performance SAS hard drives.

• Cryptocurrency/Mining Legacy: Historically, these units became very popular in the DIY community for powering GPU mining rigs due to their high reliability and cheap secondary market price, often used with third-party "breakout boards."

🛠️ Installation & Maintenance

• Hot-Swap Procedure: To install, simply slide the unit into the power supply bay until it clicks. To remove, press the blue release latch and pull the handle.

• LED Status Indicators:

  • Solid Green: Power is on and the unit is healthy.

  • Flashing Green: Unit is in standby mode or the server is off but the PSU is receiving AC power.

  • Amber/Off: Indicates a failure or a "Power Input" issue.

• Dust Management: Because G5 servers are legacy hardware, these PSUs often accumulate dust inside the small internal fan. It is highly recommended to use compressed air to clear the unit before installation to prevent thermal shutdowns.

⚠️ Voltage Reminder: If you plug this into a standard North American 110V outlet, your server will cap the power at 800W. If your server configuration (CPU/RAM/Disks) exceeds an 800W draw, the server may refuse to boot or will throttle performance until you provide 220V power.

The HPE 403781-001 is a legendary "workhorse" power supply, known for its longevity and ability to keep Gen5 ProLiant servers running through years of continuous operation.