HP ProLiant Power Supply for G5 Servers (ML350 G5, ML370 G5, DL380 G5) – Genuine & Reliable Replacement Units

At Lansotech Solutions, Nairobi’s trusted source for genuine HP server components, we understand that your enterprise‑grade hardware depends on stable and reliable power. When it comes to the HP ProLiant G5 generation servers such as the ML350 G5, ML370 G5, and DL380 G5, the right power supply unit (PSU) is critical for performance, uptime, and safety. In this article, we present a detailed guide to selecting and using the correct HP ProLiant G5 power supply, including key features, compatibility, technical specs, and best practices for protecting your investment.

Overview: Why the Power Supply Matters for HP ProLiant G5 Servers

The G5 generation of HP’s ProLiant line marked a major step in enterprise server horsepower, with dual‑socket Intel Xeon processors, increased memory support, hot‑plug drive options and advanced remote management. For example, the HP ProLiant ML350 G5 supports dual quad‑core Xeons, up to 32 GB (or more) of memory and up‑to eight hot‑plug drives.

Because of this increased demand, the power supply becomes a foundation of system stability. An undersized or non‑genuine PSU can lead to unexpected shutdowns, overheating, or even damage to server components. HP’s documentation for the ML350 G5 clearly states that hot‑plug redundant power supplies are optional but recommended for high‑availability configurations.

If you manage servers, whether in a corporate datacentre or an IT lab in Nairobi, choosing the correct PSU is not just about fit—it’s about ensuring uptime, maximising lifespan, and avoiding costly downtime.

Compatible Models & Recommended PSU Sizes

For the HP ProLiant G5 series—especially ML350 G5, ML370 G5 and DL380 G5—HP uses hot‑plug power supply modules with a range of wattage, depending on configuration (number of CPUs, drives, etc). Key points:

• These servers support single or dual redundant PSUs. For example, the ML350 G5 QuickSpecs list “Single hot‑plug power supply standard, optional second for redundancy”.

• One commonly referenced part number is 379123‑001 (and equivalent/alternative numbers such as 403781‑001, 399771‑001) rated up to 800W or 1000W depending on configuration.

• Forum discussion confirms that ML350, ML370, and DL380 G5 share power supply modules: “The power supply is the same on these three servers ML350, ML370, ML380 all G5.”

• It’s essential to match the exact form factor and connector of G5 series; PSUs from later “Common Slot” generations (G6, G7) are not compatible.

In practice, when replacing a PSU for these servers, you’ll typically look for hot‑plug compatible 800W (or higher) unit with correct HP part numbers to ensure full compatibility.

Key Features of the Genuine HP G5 Power Supply

When you select a genuine HP ProLiant G5 power supply, look for features like:

• Hot‑plug design: Replaceable without powering down the server, enabling dual‑PSU redundancy.

• Enterprise‑grade protection: Includes over‑voltage, over-current, short‑circuit protection and thermal control to safeguard intensive workloads.

• High wattage flexibility: Supports demanding configurations with multiple drives, multiple CPUs, heavy memory load, and expansion cards.

• Exact match form‑factor and connector: Ensures perfect fit and compatibility with the HP G5 chassis and backplane.

• Redundancy support (1+1): Ability to install second PSU for failover without service interruption.

• Efficiency and thermal management: Less wasted heat, better airflow, higher uptime.

These features make genuine HP PSUs optimal for data centres, server farms, and enterprise use-cases.

Common Signs You Need to Replace the PSU and How to Protect It

Signs you might need replacement:

• Server fails to boot or suddenly shuts down under load.

• PSU fan running loudly or heating dramatically.

• Error codes in HP iLO indicating power supply failure or missing module.

• Inability to add hardware or drives due to power constraints.

How to protect your new PSU and server:

• Use a surge protector or UPS to guard against power spikes and grid instability.

• Ensure adequate ventilation in the server rack—overheating shortens PSU lifespan.

• Keep dust and debris cleaned from PSU vents and server chassis regularly.

• Verify you’re not overloading the PSU—check configuration, drives, cards and expansion.

• Maintain good cable management to avoid airflow obstruction or connector stress.

• Replace with genuine HP part rather than generic — forum notes that G4 vs G5 PSUs are not interchangeable.

By following these practices, your server infrastructure will remain stable, efficient and serviceable for year.

Why Choose Lansotech Solutions for Your HP ProLiant G5 PSU

As a Nairobi‑based supplier specialising in HP hardware, we offer:

• Sourcing of genuine HP ProLiant G5 power supply modules

• Verification of part‑numbers and compatibility for ML350 G5, ML370 G5, DL380 G5

• Warranty‑backed products and professional guidance

• Same‑day delivery in Nairobi and nationwide Kenya

• Technical support for installation, diagnostics and power‑management advice

When uptime matters, you need parts you can trust. We deliver.