Which power adapter fits the HP EliteBook 840 G4? OEM part numbers

7 power adapters are documented for the HP EliteBook 840 G4: 710340-850, 710412-001, 714635-850, 741553-850, 741553-852 and 2 more. 7 of 7 come from OEM documentation (h10032.www1.hp.com, partsurfer.hp.com); last checked 2026-11-09. Not bench-tested: match the number on your old power adapter and any constraint before ordering.

Part number	Part	Constraints	Confidence	Last checked
710340-850	HP AC adapter 710340-850	OEM documentation only; not bench-tested.	OEM documented	2026-11-09
710412-001	HP 710412-001 Power Adapter	Listed for all 1 checked HP EliteBook 840 G4 product numbers. HP description: "SKO-65W ADPTR nPFC S-3P 4.5MM". Confirm your product number on HP PartSurfer before ordering. OEM parts list only; not bench-tested.	OEM documented	2026-10-23
714635-850	HP 65W 4.5 mm barrel AC adapter 714635-850	Listed for all 1 checked HP EliteBook 840 G4 product numbers. HP description: "Smart EM AC adapter (65W) - 4.5mm barrel connector, non-power factor correcting (NFPC) - Requires separate 3-wire AC power cord with C5 connector". Confirm your product number on HP PartSurfer before ordering. OEM parts list only; not bench-tested.	OEM documented	2026-10-23
741553-850	HP 741553-850 Power Adapter	Listed for all 1 checked HP EliteBook 840 G4 product numbers. HP description: "Smart AC power adapter (45 watt) - 4.5mm barrel connector, non-power factor correcting (NFPC) - Requires separate 3-wire AC power cord with C5 connector". Confirm your product number on HP PartSurfer before ordering. OEM parts list only; not bench-tested.	OEM documented	2026-10-23
741553-852	HP 45 W HP Smart AC Adapter, Argentina plug variant 741553-852	OEM documentation only; not bench-tested.	OEM documented	2026-11-09
741727-001	HP 741727-001 Power Adapter	HP description: "45 W HP Smart AC adapter, 3 prong". OEM documentation only; not bench-tested.	OEM documented	2026-11-09
742436-001	HP 742436-001 Power Adapter	Listed for all 1 checked HP EliteBook 840 G4 product numbers. HP description: "Smart AC power adapter (45 watt) - RC, 4.5mm barrel connector, non-power factor correcting (NPFC) - Requires a separate 2-wire AC power cord". 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 EliteBook 840 G4 power adapter part numbers come from?

7 of 7 fits are from OEM documentation (h10032.www1.hp.com, partsurfer.hp.com); each row links its source. Last checked 2026-11-09.

Are these power adapters tested in the HP EliteBook 840 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 EliteBook 840 G4.

Other parts for the HP EliteBook 840 G4

Battery (2) · RTC Battery (1) · Display Bezel (1) · Camera (1) · Palmrest (2) · Screen (5) · Display Back Cover (1) · Bottom Cover (1) · Heat Sink (1) · Hinge (3) · Keyboard (8) · Speakers (1) · Touchpad (2) · Power Cord (35) · Wireless Card (7) · Fingerprint Reader (1) · Card Reader (1) · Cable (1) · SSD (8) · I/O Board (1) · Motherboard (11) · Microphone (1) · Service Part (5) · Memory (3) · Hard Drive (6) · Display Cable (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-elitebook-840-g4) or the keyless JSON API.