HP 395566-003 ML350 G5 System Board

Description

Product Introduction & Engineering Value

The HP 395566-003 is the system-board assembly used in the ProLiant ML350 G5 platform. It provides the core hardware interconnect for dual Intel Xeon processors, ECC registered memory, storage interfaces, expansion cards, networking, and server-management functions.

One important procurement detail is the distinction between the assembly number and the actual system-board part number: 395566-003 corresponds to 461081-001 in HPE’s ML350 G5 documentation. That distinction matters when matching a replacement board against an installed chassis or service record.

Technical Specifications

HPE’s own community documentation distinguishes this board from the 395566-002 assembly: 461081-001 / 395566-003 supports Xeon 50xx through 54xx processors and the SATA optical-drive configuration, while 439399-001 / 395566-002 is associated with the PATA configuration.

The ML350 G5 memory architecture is DDR2, not DDR3. HPE community guidance specifically identifies PC2-5300 DDR2-667 fully buffered DIMMs for this platform.

395566-003

Field Application & the “Trench” Experience

A realistic replacement job often starts with an old ML350 G5 that still has a valuable application running on it. The server may be obsolete by current standards, but replacing it with a new platform can introduce software, storage, licensing, or interface compatibility problems.

Imagine a plant historian or legacy SCADA application running on an ML350 G5. The system board develops a no-POST condition after years of operation. Rather than rebuilding the application stack on another server, the maintenance team sources a matching 395566-003 / 461081-001 board, transfers the supported processor and memory configuration, verifies the storage controller and boot devices, and brings the existing server environment back online.

Typical technical applications include:

• Legacy SCADA historian servers where the existing operating environment must be preserved.
• Plant-floor data collection servers supporting older Ethernet-connected automation systems.
• Industrial database or application servers where migration to newer hardware would require extensive software validation.
• Engineering workstation/server infrastructure supporting legacy automation-development environments.

These examples describe plausible legacy-server applications; the board itself is a general-purpose ProLiant server system board rather than an industrial-control module.

Transparency SOP: QA & Testing

For a replacement 395566-003, visual inspection alone is not enough.

Recommended receiving procedure:

1. Identify the board
   • Confirm 395566-003.
   • Verify the corresponding 461081-001 system-board marking.
   • Check connector, socket, and mounting-hole condition.
2. Inspect the hardware
   • Examine both CPU sockets.
   • Check DIMM sockets for damaged retention tabs.
   • Inspect capacitors, connectors, heatsink mounting points, and board surfaces.
   • Look for corrosion or evidence of liquid contamination.
3. Bench-test the assembly
   • Install compatible Xeon processors and supported DDR2 ECC memory.
   • Confirm POST behavior.
   • Verify memory detection.
   • Check storage and expansion interfaces.
   • Confirm onboard network and video functions where applicable.
4. Record condition
   • Record board revision and available serial/date information.
   • Document BIOS version when practical.
   • Clearly identify whether the item is new surplus, refurbished, or used.

Current market listings show all three condition categories in circulation. One supplier lists 395566-003 as refurbished with a one-year seller warranty, while another specifically lists a used board and notes that it is not an authorized HP distribution item.

The Veteran’s Tech Trap Guide

⚠️ Trap #1 — Confusing 395566-003 with 395566-002

These are not simply interchangeable labels. HPE documentation distinguishes 395566-003 / 461081-001 from 395566-002 / 439399-001, including differences in supported processor configurations and optical-drive interfaces. Match the complete part number before ordering.

⚠️ Trap #2 — Installing DDR3 memory

Don’t. The ML350 G5 platform uses DDR2 ECC registered/fully buffered memory. HPE guidance explicitly states that the platform does not support DDR3.

PRO TIP: Before removing the original board, photograph every DIMM position and label the memory modules by slot. With eight DIMM sockets and a legacy memory architecture, recreating the original configuration from memory is asking for unnecessary troubleshooting.

⚠️ Trap #3 — Assuming every ML350 G5 has the same system board

The ML350 G5 was shipped with multiple system-board variants. HPE’s own guidance lists 413984-001 / 395566-001, 439399-001 / 395566-002, and 461081-001 / 395566-003 as different configurations. Check the board number physically rather than relying only on the server model name.

Dynamic FAQ

What is HP 395566-003?

395566-003 is an assembly number for an HP ProLiant ML350 G5 system board. The corresponding system-board part number is 461081-001.

Which server is compatible with 395566-003?

It is associated with the HP ProLiant ML350 G5. Verify the existing system-board number and chassis configuration before purchasing a replacement.

Which processors are supported?

The 395566-003 / 461081-001 configuration supports Intel Xeon 50xx, 51xx, 52xx, 53xx, and 54xx processor families according to HPE’s documented ML350 G5 board configurations. Specific CPU support can still depend on BIOS and system configuration.

Does it use DDR2 or DDR3 memory?

It uses DDR2 ECC registered/fully buffered memory, including the PC2-5300 DDR2-667 class specified for the ML350 G5. DDR3 is not supported by this platform.

Is 395566-003 the same as 461081-001?

They are associated with the same ML350 G5 system-board configuration: 395566-003 is the assembly number, while 461081-001 is the system-board part number. For procurement, request both identifiers when possible.

Is a New Surplus 395566-003 covered by an HP factory warranty?

Not automatically. Current aftermarket listings show refurbished and used units with seller-specific warranties, and at least one seller explicitly states that the original manufacturer’s warranty may not apply. For a New Surplus unit, confirm the seller’s condition definition, test report, and warranty terms before issuing a purchase order.