Which power button fits the Lenovo IdeaPad 5 15ITL05? OEM part numbers

3 power buttons are documented for the Lenovo IdeaPad 5 15ITL05: 5B40S21975, 5B40S21976, 5CB0Z31248. 3 of 3 come from OEM documentation (pcsupport.lenovo.com); last checked 2026-11-04. Not bench-tested: match the number on your old power button and any constraint before ordering.

Part number	Part	Constraints	Confidence	Last checked
5B40S21975	Lenovo Power Button L 81YK PGY 5B40S21975	Lenovo description: "Power Button L 81YK PGY". OEM documentation only; not bench-tested.	OEM documented	2026-11-04
5B40S21976	Lenovo Power Button L 81YK GG 5B40S21976	Lenovo description: "Power Button L 81YK GG". OEM documentation only; not bench-tested.	OEM documented	2026-11-04
5CB0Z31248	Lenovo Power Button L 81YK AB 5CB0Z31248	Lenovo description: "Power Button L 81YK AB". OEM documentation only; not bench-tested.	OEM documented	2026-11-04

Where do these Lenovo IdeaPad 5 15ITL05 power button part numbers come from?

3 of 3 fits are from OEM documentation (pcsupport.lenovo.com); each row links its source. Last checked 2026-11-04.

Are these power buttons tested in the Lenovo IdeaPad 5 15ITL05?

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 IdeaPad 5 15ITL05.

Other parts for the IdeaPad 5 15ITL05

Service Part (234) · Keyboard (1004) · Power Adapter (66) · Power Cord (38) · Display Cable (2) · SSD (24) · Wireless Card (2) · Display Bezel (6) · Motherboard (44) · Screen (19) · Screw Kit (10) · Bracket (2) · I/O Board (1) · Display Back Cover (17) · Heat Sink (4) · Speakers (1) · Camera (5) · Cable (6) · Fan (1) · Hard Drive (2) · Hinge (1) · RTC Battery (3) · Battery (8)

For AI agents: the same list as JSON from the free MCP server at /mcp (tool get_model_parts, model lenovo-ideapad-5-15itl05) or the keyless JSON API.