Which motherboard fits the HP ProBook 640 G8? OEM part numbers

9 motherboards are documented for the HP ProBook 640 G8: M21375-001, M21376-001, M21377-001, M21378-00, M21378-001 and 4 more. 9 of 9 come from OEM documentation (kaas.hpcloud.hp.com, partsurfer.hp.com); last checked 2026-11-12. Not bench-tested: match the number on your old motherboard and any constraint before ordering.

Part number	Part	Constraints	Confidence	Last checked
M21375-001	HP Motherboard M21375-001	OEM documentation only; not bench-tested.	OEM documented	2026-11-12
M21376-001	HP Motherboard M21376-001	OEM documentation only; not bench-tested.	OEM documented	2026-11-12
M21377-001	HP Motherboard M21377-001	OEM documentation only; not bench-tested.	OEM documented	2026-11-12
M21378-00	HP Motherboard M21378-00	OEM documentation only; not bench-tested.	OEM documented	2026-11-12
M21378-001	HP Motherboard M21378-001	OEM documentation only; not bench-tested.	OEM documented	2026-11-12
M21379-001	HP Motherboard M21379-001	OEM documentation only; not bench-tested.	OEM documented	2026-11-12
M21380-001	HP Motherboard M21380-001	OEM documentation only; not bench-tested.	OEM documented	2026-11-12
M21381-001	HP Motherboard M21381-001	OEM documentation only; not bench-tested.	OEM documented	2026-11-12
M49540-001	HP motherboard M49540-001	configuration-specific: 1 of 8 checked SKUs. Only the listed SKUs/configurations are evidenced; not a universal model fit. Saved PartSurfer BOM; no HP fetch. OEM documentation only; not bench-tested. Config limit: in the cached HP PartSurfer BOMs this part is listed on only 1 of 8 checked product numbers (435Y2US); confirm your product number on HP PartSurfer before ordering.	OEM documented	2026-10-29

Where do these HP ProBook 640 G8 motherboard part numbers come from?

9 of 9 fits are from OEM documentation (kaas.hpcloud.hp.com, partsurfer.hp.com); each row links its source. Last checked 2026-11-12.

Are these motherboards tested in the HP ProBook 640 G8?

No. Fits come from manufacturer or retailer documentation and are not bench-tested. Check the part number on your old part and any listed constraint.

All documented parts for the HP ProBook 640 G8.

Other parts for the HP ProBook 640 G8

Power Adapter (12) · Camera (2) · Battery (2) · Bottom Cover (2) · Display Back Cover (3) · Display Bezel (3) · Screen (6) · Speakers (1) · Display Cable (1) · Fan (2) · Touchpad (3) · RTC Battery (1) · I/O Board (2) · Keyboard (6) · Fingerprint Reader (2) · Hinge (1) · Heat Sink (2) · Cable (7) · Power Cord (36) · Wireless Card (6) · SSD (12) · Microphone (1) · Antenna (2) · Memory (5) · Service Part (11) · Screw Kit (1) · Card Reader (1)

For AI agents: the same list as JSON from the free MCP server at /mcp (tool get_model_parts, model hp-probook-640-g8) or the keyless JSON API.