Which keyboard fits the HP ProBook 450 G8? OEM part numbers

7 keyboards are documented for the HP ProBook 450 G8: M21740-001, M21740-xx1, M21741-001, M21741-xx1, M21742-001 and 2 more. 7 of 7 come from OEM documentation (partsurfer.hp.com, kaas.hpcloud.hp.com); last checked 2026-11-12. Not bench-tested: match the number on your old keyboard and any constraint before ordering.

Part number	Part	Constraints	Confidence	Last checked
M21740-001	HP top cover with keyboard (US) M21740-001	Listed for 3 of 8 checked HP ProBook 450 G8 product numbers (3A3G5US, 4J4R7US, 38X32US), so it is configuration-specific. HP description: "SPS-TOPCOVER W/KB CP num US". Confirm your product number on HP PartSurfer before ordering. OEM parts list only; not bench-tested.	OEM documented	2026-10-23
M21740-xx1	HP Top cover with keyboard, not backlit M21740-xx1	HP spare part: Top cover with keyboard, not backlit. OEM documentation only; not bench-tested.	OEM documented	2026-11-12
M21741-001	HP top cover with backlit privacy keyboard (US) M21741-001	Listed for 1 of 8 checked HP ProBook 450 G8 product numbers (2Z2A0US), so it is configuration-specific. HP description: "SPS-TOPCOVER W/KB CP BL num PVCY US". Confirm your product number on HP PartSurfer before ordering. OEM parts list only; not bench-tested.	OEM documented	2026-10-23
M21741-xx1	HP Keyboard M21741-xx1	OEM documentation only; not bench-tested.	OEM documented	2026-11-12
M21742-001	HP top cover with backlit keyboard (US) M21742-001	Listed for 3 of 8 checked HP ProBook 450 G8 product numbers (46Q32US, 3F7P3US, 361Q9US), so it is configuration-specific. HP description: "SPS-TOPCOVER W/KB CP BL num US". Confirm your product number on HP PartSurfer before ordering. OEM parts list only; not bench-tested.	OEM documented	2026-10-23
M21742-xx1	HP Top cover with keyboard, backlit M21742-xx1	HP spare part: Top cover with keyboard, backlit. OEM documentation only; not bench-tested.	OEM documented	2026-11-12
M78508-001	HP top cover with keyboard (US) M78508-001	Listed for 1 of 8 checked HP ProBook 450 G8 product numbers (64Y01US), so it is configuration-specific. HP description: "SPS-TOPCOVER W/KB CP NoSD US". Confirm your product number on HP PartSurfer before ordering. OEM parts list only; not bench-tested.	OEM documented	2026-10-23

Where do these HP ProBook 450 G8 keyboard part numbers come from?

7 of 7 fits are from OEM documentation (partsurfer.hp.com, kaas.hpcloud.hp.com); each row links its source. Last checked 2026-11-12.

Are these keyboards tested in the HP ProBook 450 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 450 G8.

Other parts for the HP ProBook 450 G8

Power Adapter (8) · Battery (2) · Heat Sink (2) · Fan (2) · Bottom Cover (2) · Speakers (1) · Fingerprint Reader (2) · Cable (2) · Hinge (1) · Display Cable (1) · Screen (8) · Display Back Cover (3) · Display Bezel (4) · Touchpad (1) · Camera (2) · RTC Battery (1) · Power Cord (35) · Wireless Card (4) · SSD (8) · I/O Board (2) · Microphone (1) · Motherboard (12) · Memory (3) · Service Part (4) · Antenna (1) · Screw Kit (1)

For AI agents: the same list as JSON from the free MCP server at /mcp (tool get_model_parts, model hp-probook-450-g8) or the keyless JSON API.