Which I/O board fits the HP EliteBook 755 G3? OEM part numbers

3 I/O boards are documented for the HP EliteBook 755 G3: 821169-001, 821190-001, 836619-001. 3 of 3 come from OEM documentation (h10032.www1.hp.com); last checked 2026-11-12. Not bench-tested: match the number on your old I/O board and any constraint before ordering.

Part number	Part	Constraints	Confidence	Last checked
821169-001	HP power button board (14")	HP spare part: Power button board, For 14” computers. OEM documentation only; not bench-tested.	OEM documented	2026-11-12
821190-001	HP power button board (15")	HP lists this spare part number for the HP EliteBook 755 G3 in its Maintenance and Service Guide (printed p.22).	OEM documented	2026-11-01
836619-001	HP USB/audio board (EliteBook 850)	HP lists this spare part number for the HP EliteBook 755 G3 in its Maintenance and Service Guide (printed p.22).	OEM documented	2026-11-01

Where do these HP EliteBook 755 G3 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 2026-11-12.

Are these I/O boards tested in the HP EliteBook 755 G3?

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 EliteBook 755 G3.

Other parts for the HP EliteBook 755 G3

Battery (1) · Power Adapter (3) · Keyboard (2) · Heat Sink (3) · Bottom Cover (2) · Screen (7) · SSD (8) · Hard Drive (6) · Memory (2) · Hinge (2) · Display Back Cover (2) · Touchpad (4) · Palmrest (2) · Display Cable (3) · Power Cord (36) · Cable (1) · Service Part (15) · Screw Kit (1) · Motherboard (1) · Display Bezel (2) · Microphone (1) · Fingerprint Reader (1) · Speakers (1) · Camera (1) · RTC Battery (1) · Wireless Card (2)

For AI agents: the same list as JSON from the free MCP server at /mcp (tool get_model_parts, model hp-elitebook-755-g3) or the keyless JSON API.