Which laptops does M21994-001 fit? M21994-001 (HP service part) is documented to fit 7 laptop models, including HP EliteBook 650 G9, HP ProBook 455 G9 and HP ProBook 640 G8 and 4 more. Fits come from OEM documentation (HP service guide), last checked 2026-11-12; not bench-tested. Full compatibility list.
HP spare part description: "RJ-45 (network) jack door". Documented OEM replacement; see each fit for configuration limits.
Devices documented to accept this OEM component. Compatibility from OEM documentation or a labelled source, with a confidence level on each fit; not bench-tested.
| Model | Brand | Last checked | Confidence |
|---|---|---|---|
| HP EliteBook 650 G9 All service part for this model | HP | 2026-11-04 | OEM documented |
| HP ProBook 455 G9 All service part for this model | HP | 2026-11-04 | OEM documented |
| HP ProBook 640 G8 All service part for this model | HP | 2026-11-12 | OEM documented |
| HP ProBook 650 G8 All service part for this model | HP | 2026-11-12 | OEM documented |
| HP ProBook 455 G8 All service part for this model | HP | 2026-11-12 | OEM documented |
| HP ProBook 450 G10 All service part for this model | HP | 2026-11-12 | OEM documented |
| HP ProBook 450 G9 All service part for this model | HP | 2026-11-12 | Not sure (under 90%) |
HP description: "RJ-45 (network) jack door". Listed in a sibling or family document (tier B). OEM documentation only; not bench-tested.
HP Maintenance and Service Guide, Document Part Number N03559-001 (copy saved from support.hp.com), PDF pages 29, 61: "M21994-001" (RJ-45 (network) jack door). (via MG fold). Direct PDF verified by sha256 match with local copy
HP description: "Network jack door that comes with the plastics kit". Listed in a sibling or family document (tier B). OEM documentation only; not bench-tested.
HP Maintenance and Service Guide, PDF page 59: "M21994-001" (Network jack door that comes with the plastics kit). (via MG fold)
HP spare part: RJ-45 cover. OEM documentation only; not bench-tested.
HP Maintenance and Service Guide pdf_12638334, PDF page 31: "M21994-001". The fetched guide names this part for this model. (via v10 fold 2026-11-12)
HP spare part: RJ-45 cover. OEM documentation only; not bench-tested.
HP Maintenance and Service Guide pdf_12638344, PDF page 31: "M21994-001". The fetched guide names this part for this model. (via v10 fold 2026-11-12)
HP spare part: RJ-45 door. OEM documentation only; not bench-tested.
HP Maintenance and Service Guide pdf_12607734, PDF page 27: "door is available as spare part number M21994-001.". The fetched guide names this part for this model. (via v10 fold 2026-11-12)
HP spare part: RJ-45 door (Cable Kit). OEM documentation only; not bench-tested.
HP Maintenance and Service Guide pdf_7742024, PDF page 29: "door is available as spare part number M21994-001". The fetched guide names this part for this model. (via v10 fold 2026-11-12)
HP spare part: RJ-45 (network) jack door (Cable Kit). Unverified source; not bench-tested.
Manual on file for HP ProBook 450 G9 Maintenance and Service Guide, PDF page 30: "door is available as spare part number M21994-001". Source link not recorded and not verified as an HP document (red, not sure). (via v10 fold 2026-11-12)
Summary of the documented fits above (sources on each model card); not bench-tested.
| Model | Brand | Type |
|---|---|---|
| HP EliteBook 650 G9 | HP | Business laptop |
| HP ProBook 455 G9 | HP | Business laptop |
| HP ProBook 640 G8 | HP | Business laptop |
| HP ProBook 650 G8 | HP | Business laptop |
| HP ProBook 455 G8 | HP | Business laptop |
| HP ProBook 450 G10 | HP | Business laptop |
| HP ProBook 450 G9 | HP | Business laptop |
Fit check: Always confirm the OEM part/FRU number on your machine's label or in the service manual before buying. HP service guide
M21994-001