Which laptops does 5B21B08040 fit? 5B21B08040 (Lenovo motherboard) is documented to fit 1 laptop model: IdeaPad 3 15IIL05. Fits come from OEM documentation (Lenovo Parts Lookup), last checked 2026-11-04; not bench-tested. Full compatibility list.
Lenovo spare part description: "MBL81WENOK 5805_UMA_4G_NT". 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 |
|---|---|---|---|
| IdeaPad 3 15IIL05 All motherboard for this model | Lenovo | 2026-11-04 | OEM documented |
Lenovo description: "MBL81WENOK 5805_UMA_4G_NT". OEM documentation only; not bench-tested.
Lenovo Support parts list for machine type 81WE: "5B21B08040" (MBL81WENOK 5805_UMA_4G_NT). (via MG fold)
Summary of the documented fits above (sources on each model card); not bench-tested.
| Model | Brand | Type |
|---|---|---|
| IdeaPad 3 15IIL05 | Lenovo | Laptop |
Fit check: Always confirm the OEM part/FRU number on your machine's label or in the service manual before buying. Lenovo Parts Lookup
5B21B08040