CRU Part No. U3B-00045 (note only) Substitute SKU EP2-70387 (note only) Applies to: 13 (Learn 13.5-inch column X only). Keyboard = C-cover top case incl. palm rest; Platinum = Alcantara fabric (Model 1950), Black/Sage/Sandstone = metal (Model 1951) per iFixit naming + Learn model list. OEM documentation only; not bench-tested.
Source notes
Microsoft Learn Surface Laptop 5 Device Information and Service Parts (shared 13.5"/15" page), Illustrated Service Parts List (ASP/FRU, CRU, 13.5-inch, 15-inch, Substitute SKU columns). Fetched 2026-10-28 (updated_at 2026-05-06; page footer 2026-02-13). Item (2) Keyboard (C-Cover) Assembly: Sandstone, English (America / Asia): ASP/FRU U1T-00045. Cross-check: PDF M1237924_RevE parts list pp.14-17 lists U3B-00045 ('Sandstone, English (America / Asia)', applies 13); TD SYNNEX US SKU guide (Laptop 5 Intel 13", Model 1950/1951) lists CRU U3B-00045; iFixit US: IF413-029-4 Sandstone / English Keyboard (Part Number U3B-00045). (via MM-LOOP-025).