-601 = Windows board, -001 = non-Windows (MSG copy "xxxxxx-601: Windows operating system"; MSG lists N0127x-xx1 patterns only). CPU soldered; RAM is socketed SODIMM. Match the exact board PN/CPU. WWAN-capable board (PartSurfer "fWWAN"; MSG copy "Intel Core i5-1235U processor, models with WWAN N01273-xx1"); only on 6L1U6US/6N0K6US, which also carry WWAN back cover N01920-001. PartSurfer OrderFlag 0 (orderability not confirmed). Configuration-specific: 2/8 checked SKUs. Match your product number or the original part number. OEM parts list only; not bench-tested.
Source notes
Saved HP PartSurfer product BOM(s) on box (partsurfer/cache_<SKU>.json, captured before this loop; no new HP fetch, HP OEM cool-down ON). Listed for 2 of 8 checked US product numbers (6L1U6US, 6N0K6US; product name "HP ProBook 450 15.6 inch G9 Notebook PC (4D3X2AV)"). HP description: "SPS-MB UMA i5-1235U fWWAN WIN". Keyword: Unknown Keyword. OrderFlag: 0. (via MM-LOOP-051).