BIOS WORLDLenovo (LCFC) T490S NM-B891 · Boardview
File name: T490S.tvw
Lenovo (LCFC) T490S — Boardview, board NM-B891, 6.3 MB. Main chips: MEC1663-WC (EC), W25Q80DVSSIG / W25Q256JVEIQ (BIOS flash), BQ25700ARSNR (charger), MP86901-CGLT-C669-Z / NB693GQ-C669-Z / MP86901-AGQT-C669-Z (PWM).
- Type
- Boardview
- Size
- 6.3 MB
- Added
- 2026-10-06
- Brand
- Lenovo (LCFC)
- Board
- NM-B891
- Also written as
- NMB891 · NM B891 · NMB 891 · NMB-891
- MD5
- 24445B42AE14F27163D5CF612586C0D1
- Found in
- 联想 › lenovo update 20230406 › 位号图
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Main chips and parts
| Part | Function |
|---|---|
| MEC1663-WC | EC (embedded controller) |
| W25Q80DVSSIG | BIOS / SPI flash |
| W25Q256JVEIQ | BIOS / SPI flash |
| BQ25700ARSNR | Charger |
| MP86901-CGLT-C669-Z | Power (PWM) |
| NB693GQ-C669-Z | Power (PWM) |
| MP86901-AGQT-C669-Z | Power (PWM) |
| NB687GQ-C669-Z | Power (PWM) |
| MP1603LGTF-C669-Z | Power (PWM) |
| NB690GRP-C669-Z | Power (PWM) |
| TPS51393PRJER | Power (PWM) |
| MP2949AGQKT-024E-C669-Z | Power (PWM) |
| TPS22971YZPT | Power (LDO / switch) |
| TPS2553DRVR | Power (LDO / switch) |
| TPS2069CDGNR | Power (LDO / switch) |
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