Seagate
Seagate Momentus 5400.3 ST9160821AS 160GB 5400 RPM 8MB Cache SATA 1.5Gb/s 2.5" laptop hard drive
A 2.5" SATA laptop drive storing 160 GB at 5400 RPM with an 8 MB cache and 1.5 Gb/s interface
- PackagingBare Drive
- InterfaceSATA 1.5Gb/s
- Capacity160GB
- Cache8MB
- Average Latency5.6ms
- RPM5400 RPM
- Perpendicular recording enables 160GB capacity in standard 2.5" form factor
- SATA 1.5Gb/s interface with 8MB cache delivers 11.0ms random read seek time
- 5400 RPM operation draws only 2.0 watts to extend battery life
- Whisper-quiet acoustics suit notebooks, tablets, printers and external storage
- 6ms average latency supports fast performance and superb reliability
Notebook drive for legacy SATA systems
This 2.5" Seagate Momentus 5400.3 supplies 160GB of storage over a SATA 1.5Gb/s link. It spins at 5400 RPM with an 8MB cache and draws 2.0 watts, helping extend battery life in portable gear. Perpendicular recording packs the capacity into the standard 2.5" form factor.
Suits older laptops and low-power embedded gear
Buyers who need higher throughput or larger volumes should look elsewhere. The 1.5Gb/s interface and 5400 RPM spindle limit sustained transfer rates for modern workloads. Systems requiring 6Gb/s SATA or faster random access will not benefit from this drive.
SATA 1.5Gb/s interface decides fit
The drive connects only through a SATA 150 controller, so the host must provide that exact interface. A 6Gb/s port will negotiate down, but a machine lacking any SATA connector cannot use the drive at all.
Highlights
- Perpendicular recording enables 160GB capacity in standard 2.5" form factor
- SATA 1.5Gb/s interface with 8MB cache delivers 11.0ms random read seek time
- 5400 RPM operation draws only 2.0 watts to extend battery life
- Whisper-quiet acoustics suit notebooks, tablets, printers and external storage
- 6ms average latency supports fast performance and superb reliability
Specifications
| Brand | Seagate |
|---|---|
| Series | Momentus 5400.3 |
| Model | ST9160821AS |
| Packaging | Bare Drive |
| Interface | SATA 1.5Gb/s |
| Capacity | 160GB |
| Cache | 8MB |
| Average Latency | 5.6ms |
| RPM | 5400 RPM |
| Features | SATA NCQ interface Perpendicular recording technology for increased storage capacity Fast performance Whisper-quiet acoustics Superb reliability Rugged mobility Low power consumption |
| Form Factor | 2.5" |
| Shipping weight | 0.10 kg |
| Package size | 102 × 70 × 8 mm |
Questions about this item
Will the 2.5" form factor and SATA 1.5Gb/s interface fit my laptop's drive bay?
Yes, the drive uses the standard 2.5" form factor and a SATA 1.5Gb/s interface compatible with most laptop bays and caddies designed for 2.5" SATA drives.
Do I need to change any jumpers or BIOS settings when installing this bare SATA drive?
No jumpers are required for SATA drives; install the drive, ensure the SATA data and power cables are fully seated, then initialise and format the 160GB volume in your operating system.
How often should I check the drive health given the 5400 RPM mechanism and 8MB cache?
Monitor SMART attributes periodically using diagnostic software; the 5400 RPM motor and 8MB cache are sealed inside the enclosure and require no user maintenance.
New to this? Paying with USDT: TRC-20 or ERC-20 — what to check, what it costs to pay, and what is never asked for.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
