[ IDENTIFIED HDD // MODEL-SPECIFIC RECORD ]
Seagate Momentus 5400.3 ST9160821AS
160 GB, 2.5-inch SATA mobile hard drive. The specified SATA model is distinct from the similarly named PATA variants.
IDENTIFICATION: Match the entire label code and firmware. A 160 GB family member with a different interface suffix is not a drop-in equivalent.
Recorded specifications
| Exact model / capacity | ST9160821AS / 160 GB nominal |
|---|---|
| Form factor / height | 2.5-inch / 9.5 mm |
| Interface | Serial ATA, 1.5 Gb/s generation |
| Rotation / cache | 5,400 RPM / 8 MB buffer |
| Sector / recording format | 512 bytes per sector; perpendicular magnetic recording (PMR), not 512e. |
Compatibility, noise, shock and reliability
- Check SATA host support, 9.5 mm mounting clearance and 5 V power. Some older systems impose BIOS capacity or boot constraints even when the physical connection fits.
- The manufacturer family sheet specifies mode-dependent idle/seek noise (about 2.3 bel idle and 2.5–3.0 bel seeking) and shock limits of 350 G operating (2 ms) / 900 G non-operating (1 ms).
- Shock values describe controlled tests and do not endorse drops or handling while spinning. Keep backups; cycle-life and error-rate ratings are population figures, not a remaining-life guarantee.
- Check reported logical sectors before legacy OS installation, cloning or partitioning; preserve the original drive read-only if data recovery is the purpose.
Manufacturer documents
- Seagate Momentus 5400 Data SheetManufacturer series specifications and environmental information.
- Seagate Momentus 5400.3 SATA Product Manual (archival copy)Seagate-issued manual, publication 100398882; consult the exact model table and revision.
- Seagate Manuals LibraryOfficial documentation index for archived product manuals.