Which touchpad fits the HP ProBook 645 G1? OEM part numbers

10 touchpads are documented for the HP ProBook 645 G1: 738394-001, 738407-001, 738408-001, 738708-001, 738709-001 and 5 more. 1 of 10 comes from OEM documentation (h10032.www1.hp.com); last checked 2026-11-12. Not bench-tested: match the number on your old touchpad and any constraint before ordering.

Part number	Part	Constraints	Confidence	Last checked
738394-001	HP TouchPad with cable and bracket 738394-001	HP description: "TouchPad with cable and bracket". OEM documentation only; not bench-tested.	OEM documented	2026-11-04
738407-001	HP touchpad 738407-001	HP spare part: Top cover with 2-button TouchPad and bracket. OEM documentation only; not bench-tested.	Mostly documented (90–99%)	2026-11-12
738408-001	HP touchpad 738408-001	HP spare part: Top cover with 4-button TouchPad and bracket. OEM documentation only; not bench-tested.	Mostly documented (90–99%)	2026-11-12
738708-001	HP Top cover with 2-button TouchPad 738708-001	HP spare part: Top cover with 2-button TouchPad. OEM documentation only; not bench-tested.	Mostly documented (90–99%)	2026-11-12
738709-001	HP Top cover with 4-button TouchPad 738709-001	HP spare part: Top cover with 4-button TouchPad. OEM documentation only; not bench-tested.	Mostly documented (90–99%)	2026-11-12
738710-001	HP TouchPad, 15.6-in., 2-button 738710-001	HP spare part: For 15.6-in. models with 2-button TouchPad. OEM documentation only; not bench-tested.	Mostly documented (90–99%)	2026-11-12
738711-001	HP TouchPad, 15.6-in., 4-button 738711-001	HP spare part: For 15.6-in. models with 4-button TouchPad. OEM documentation only; not bench-tested.	Mostly documented (90–99%)	2026-11-12
745889-001	HP Top cover with 2-button TouchPad 745889-001	HP spare part: Top cover with 2-button TouchPad. OEM documentation only; not bench-tested.	Mostly documented (90–99%)	2026-11-12
745890-001	HP Top cover with 4-button TouchPad 745890-001	HP spare part: Top cover with 4-button TouchPad. OEM documentation only; not bench-tested.	Mostly documented (90–99%)	2026-11-12
805782-001	HP Top cover, 2-button TouchPad, backlit keyboard 805782-001	HP spare part: Top cover with 2-button TouchPad and backlit keyboard. OEM documentation only; not bench-tested.	Mostly documented (90–99%)	2026-11-12

Where do these HP ProBook 645 G1 touchpad part numbers come from?

1 of 10 fits are from OEM documentation (h10032.www1.hp.com); each row links its source. Last checked 2026-11-12.

Are these touchpads tested in the HP ProBook 645 G1?

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 645 G1.

Other parts for the HP ProBook 645 G1

Service Part (48) · Keyboard (198) · Speakers (1) · Fan (2) · Heat Sink (2) · Cable (3) · Bottom Cover (2) · Power Adapter (9) · Wireless Card (5) · Hard Drive (17) · RTC Battery (1) · Battery (4) · Camera (1) · Microphone (1) · SSD (16) · Display Cable (4) · Power Cord (16) · Screw Kit (1) · Memory (4) · Motherboard (70) · Display Bezel (6) · Hinge (1) · Screen (14) · Card Reader (3) · Service Door (4) · 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-645-g1) or the keyless JSON API.