Small daughterboard typed I/O Board (029-039/045 precedent: card reader / smart card / USB / power button boards typed I/O Board; Power Button type held by Main). PartSurfer/EMPR "SMART CARD READER W/CABLE" but MSG transcription "Card reader board (includes cable)"; the 450 G7 left side has an SD card reader. Card Reader is an alternative existing type (type call for Main). Configuration-specific: 7/8 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 7 of 8 checked US product numbers (19R00US, 1D967US, 3P147US, 16U23US, 16W55US, 1X8N8US, 2F5S8US; product name "HP ProBook 450 G7 Notebook PC (6YY28AV)"). HP description: "SMART CARD READER W/CABLE". Keyword: Reader. OrderFlag: 1. (via MM-LOOP-049).