Which I/O board fits the HP EliteBook 840 G3? OEM part numbers
4 I/O boards are documented for the HP EliteBook 840 G3: 821169-001, 821190-001, 836619-001, 837846-001. 4 of 4 come from OEM documentation (h10032.www1.hp.com); last checked 2026-11-01. 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") | OEM documentation only; not bench-tested. | OEM documented | 2026-10-27 |
821190-001 | HP power button board (15") | HP lists this spare part number for the HP EliteBook 840 G3 in its Maintenance and Service Guide (printed p.23). | OEM documented | 2026-11-01 |
836619-001 | HP USB/audio board (EliteBook 850) | HP lists this spare part number for the HP EliteBook 840 G3 in its Maintenance and Service Guide (printed p.23). | OEM documented | 2026-11-01 |
837846-001 | HP USB/audio board (EliteBook 848/840) | OEM documentation only; not bench-tested. | OEM documented | 2026-10-27 |
Where do these HP EliteBook 840 G3 I/O board part numbers come from?
4 of 4 fits are from OEM documentation (h10032.www1.hp.com); each row links its source. Last checked 2026-11-01.
Are these I/O boards tested in the HP EliteBook 840 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.
How to replace it
Steps paraphrased from the manufacturer service manual, with page citations. Not bench-tested.
All documented parts for the HP EliteBook 840 G3.
Other parts for the HP EliteBook 840 G3
Keyboard (4) · Palmrest (3) · Touchpad (5) · Speakers (1) · Fingerprint Reader (1) · Heat Sink (3) · RTC Battery (1) · Battery (1) · Bottom Cover (3) · Display Bezel (3) · Hinge (2) · Camera (1) · Display Cable (3) · Screen (12) · Display Back Cover (5) · Power Adapter (5) · Wireless Card (1) · Hard Drive (6) · Motherboard (7) · Service Part (13) · SSD (7) · Memory (3) · Microphone (2) · Cable (1) · Power Cord (33) · Screw Kit (1)
For AI agents: the same list as JSON from the free MCP server at /mcp (tool get_model_parts, model hp-elitebook-840-g3) or the keyless JSON API.
Key facts
- Model
- HP EliteBook 840 G3
- Part type
- I/O Board
- Documented parts
- 4
- OEM-documented fits
- 4 of 4
- Source sites
- h10032.www1.hp.com
- Last checked
- 2026-11-01
- Tested
- Not bench-tested; documentation only