Learn publishes EP2-18256 itself in the "SKU Part No." column for this Intel/Pro 10 5G part (no 3-character FRU number is published); it is the PN, not a substitute. Substitute SKU EP2-69169 (note only, not a separate catalog part). Regional SKU AOC = Canada, Mexico, USA (Learn footnote). Applies to: pro10-5g (Learn variant says Intel (Surface Pro 10 for Business 5G = Intel Core Ultra per Microsoft spec page)). OEM documentation only; not bench-tested.
Source notes
Microsoft Learn Surface Pro 11th Edition with 5G and Pro 10 with 5G for Business Device Information and Service Parts, Illustrated Service Parts List (SKU Part No. + Substitute SKU columns). Page read 2026-10-28 (footer last updated 2026-03-19). Item (7) Motherboard (includes main processor and main memory): Intel Core Ultra 7 16GB AOC*: SKU Part No. EP2-18256; Substitute SKU EP2-69169. Cross-check: service guide PDF M1325520 Rev B p.16-18 (same PN and variant; no Substitute column). Procedure: Motherboard Replacement Process. (via MM-LOOP-020).