Which I/O board fits the HP ProBook 450 G4? OEM part numbers

3 I/O boards are documented for the HP ProBook 450 G4: 905753-001, 905754-001, 905755-001. 3 of 3 come from OEM documentation (h10032.www1.hp.com); last checked 2026-10-27. Not bench-tested: match the number on your old I/O board and any constraint before ordering.

Part number	Part	Constraints	Confidence	Last checked
905753-001	HP function board	OEM documentation only; not bench-tested.	OEM documented	2026-10-27
905754-001	HP power button board	OEM documentation only; not bench-tested.	OEM documented	2026-10-27
905755-001	HP USB/audio board	OEM documentation only; not bench-tested.	OEM documented	2026-10-27

Where do these HP ProBook 450 G4 I/O board part numbers come from?

3 of 3 fits are from OEM documentation (h10032.www1.hp.com); each row links its source. Last checked 2026-10-27.

Are these I/O boards tested in the HP ProBook 450 G4?

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 G4.

Other parts for the HP ProBook 450 G4

Screen (6) · Keyboard (2) · Palmrest (1) · Fingerprint Reader (1) · Speakers (1) · Battery (1) · Fan (1) · Cable (7) · Heat Sink (2) · Bottom Cover (2) · Wireless Card (5) · Display Bezel (4) · Camera (1) · Display Cable (2) · Hinge (1) · Display Back Cover (2) · Power Adapter (8) · Power Cord (29) · Service Part (12) · Memory (2) · SSD (3) · Hard Drive (7) · Microphone (1) · Hinge Cover (1)

For AI agents: the same list as JSON from the free MCP server at /mcp (tool get_model_parts, model hp-probook-450-g4) or the keyless JSON API.