-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. Celeron 7305 board, 7G6S1US/7P8W4US. 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 (7G6S1US, 7P8W4US; product name "HP ProBook 450 15.6 inch G9 Notebook PC (4D3W8AV)"). HP description: "SPS-MB UMA Cel7305 G9 WIN". Keyword: Unknown Keyword. OrderFlag: 1. (via MM-LOOP-051).