Seagate
Seagate ST9120817AS 120GB 5400 RPM 8MB SATA 3.0Gb/s 2.5" laptop hard drive
A 120GB 2.5-inch laptop hard drive with 5400 RPM and 8MB cache over SATA 3.0Gb/s
- PackagingBare Drive
- InterfaceSATA 3.0Gb/s
- Capacity120GB
- Cache8MB
- Average Latency5.6ms
- RPM5400 RPM
- 120GB capacity stores documents and media
- 5400 RPM spindle delivers quiet operation
- 8MB cache speeds up frequent file access
- SATA 3.0Gb/s interface fits legacy laptops
- 5 inch form factor matches standard drive bays
120GB SATA laptop drive
The Seagate ST9120817AS is a 120GB 2.5 inch internal hard drive built for notebook computers. It arrives as a bare drive without cables or mounting hardware. The 5400 RPM spindle speed and 8MB cache suit routine office tasks and light media storage. Condition is new from the supplier.
SATA 3.0Gb/s interface
This drive connects through a SATA 3.0Gb/s port, the single specification that determines whether it fits your laptop. The interface matches most notebooks released around 2016 and earlier that accept 2.5 inch SATA drives. Average latency is 5.6ms at 5400 RPM.
Suits older notebook upgrades
Buyers replacing a failed drive in a compatible SATA laptop or adding modest secondary storage will find the capacity adequate. Users who want faster boot times, higher throughput or larger capacities should look at solid-state alternatives or higher-capacity mechanical drives.
Highlights
- 120GB capacity stores documents and media
- 5400 RPM spindle delivers quiet operation
- 8MB cache speeds up frequent file access
- SATA 3.0Gb/s interface fits legacy laptops
- 5 inch form factor matches standard drive bays
Specifications
| Brand | Seagate |
|---|---|
| Model | ST9120817AS |
| Packaging | Bare Drive |
| Interface | SATA 3.0Gb/s |
| Capacity | 120GB |
| Cache | 8MB |
| Average Latency | 5.6ms |
| RPM | 5400 RPM |
| Form Factor | 2.5" |
| Shipping weight | 0.09 kg |
| Package size | 108 × 70 × 10 mm |
Questions about this item
How does the 5400 RPM speed affect everyday laptop use?
The 5400 RPM spindle delivers an average latency of 5.6ms, which is typical for standard notebook workloads such as web browsing, document editing and media playback.
What does the SATA 3.0Gb/s interface limit in practice?
The SATA 3.0Gb/s link caps the maximum transfer rate at 3.0 Gb/s, so sustained reads and writes will not exceed that bandwidth even if the drive mechanics could go faster.
Will this 2.5" drive fit my laptop's drive bay?
The drive uses the standard 2.5-inch form factor, matching the mounting holes and connector location found in most notebook internal bays.
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