Seagate ST9500325AS 500GB SATA notebook hard drive front view Seagate ST9500325AS 500GB SATA notebook hard drive front view
Seagate ST9500325AS 500GB SATA notebook hard drive front view Seagate ST9500325AS 500GB SATA notebook hard drive front view
Seagate Momentus 5400.6 top view Seagate Momentus 5400.6 top view
Seagate ST9500325AS angled view Seagate ST9500325AS angled view
Seagate ST9500325AS 500GB SATA notebook hard drive front view
Seagate ST9500325AS 500GB SATA notebook hard drive front view
Seagate Momentus 5400.6 top view
Seagate ST9500325AS angled view

Seagate

Seagate ST9500325AS – 500GB SATA 3Gb/s | 2.5" | 5400 RPM | Notebook HDD

$57.50

Brand New, Factory Sealed | In Stock | Bulk Orders Available

The ST9500325AS is a 500GB SATA 3Gb/s hard drive featuring 5400 RPM, 8MB cache, and 14ms average seek time in a 2.5" form factor. Built for 2008-era notebook systems, it is ideal for mainstream laptops, external storage solutions, and portable computing applications. Compatible with any system supporting 2.5" SATA drives including most laptops and external enclosures. Features fourth-generation perpendicular recording technology with Fluid Dynamic Bearing motor for continuous operation and enhanced reliability.

All products from Anand International ship brand new and factory sealed. Volume and B2B pricing available for qualified buyers.
Specifications
  • Manufacturer: Seagate
  • Model: ST9500325AS
  • Capacity: 500GB
  • Interface: SATA 3Gb/s
  • Spindle Speed: 5400 RPM
  • Cache: 8MB
  • Form Factor: 2.5" x 9.5mm
  • Seek Time: 14ms (average)
  • Latency: 5.6ms
  • MTBF: 500,000 hours
  • Drive Type: Notebook HDD
  • Warranty: 90 days
  • Shipping: Free domestic US shipping
  • Condition: Brand New, Factory Sealed
Product Features
  • SATA 3Gb/s interface with Native Command Queuing (NCQ)
  • Fourth-generation perpendicular magnetic recording
  • QuietStep technology for ultra-quiet operation
  • G-Force Protection with 1000G non-operating shock resistance
  • Fluid Dynamic Bearing (FDB) motor technology
  • Ramp load heads for improved power efficiency
  • 3D Defense System with Drive, Data, and Diagnostic Defense
  • SeaTools diagnostic software compatibility
  • Direct replacement for legacy systems requiring SATA connectivity
  • 90-day Anand International warranty on all legacy stock
  • Free domestic US shipping included
  • Volume and B2B pricing available for qualified buyers
Compatibility

Compatible with any laptop or system supporting 2.5" SATA drives, standard SATA controllers, and most external USB/SATA enclosures. Not compatible with systems requiring SAS, SCSI, or IDE interfaces.
Shipping & Returns
  • Free Shipping: We currently offer free Economy Shipping within the continental U.S. with no minimum order required. Expedited shipping is available at standard carrier rates.
  • Same-Day Shipping: Order placed before 2PM PST will ship the same day. Orders received after this time will ship the following business day.
  • Hassle-Free Returns: If you're not completely satisfied with your purchase, simply return it within 10 days for a hassle-free refund or exchange.

500GB SATA 3Gb/s 5400 RPM 9.5mm Factory Sealed

Why the ST9500325AS is the right laptop drive

The Momentus 5400.6 series represents Seagate's fourth-generation perpendicular recording technology in a proven 2.5" notebook form factor. With 500GB capacity and optimized 5400 RPM performance, this drive delivers the ideal balance of storage space and power efficiency for mobile computing. The 9.5mm height ensures compatibility with virtually all laptop designs while maintaining robust shock resistance for portable applications.

Perpendicular Recording Technology

Fourth-generation PMR technology enables high-density 500GB capacity in the standard 2.5" form factor with improved performance over traditional recording methods.

QuietStep Ultra-Low Noise

Advanced QuietStep technology minimizes acoustic noise during head load/unload operations for whisper-quiet performance in mobile environments.

Enhanced Shock Protection

G-Force Protection technology provides 1000G non-operating shock resistance and 350G operating shock tolerance to protect data during mobile use.

Power-Optimized Design

Ramp load technology and advanced power management deliver industry-leading power efficiency for extended battery life in laptops.

New Old Stock with 90-Day Warranty

Available as brand new, factory sealed old stock units from Anand International with a 90-day warranty. Ideal for legacy system maintenance, vintage computing restoration, and hard-to-find replacement needs.

Frequently Asked Questions

Frequently asked questions for SATA, including information on usage, configuration, and compatibility.

1. What is a SATA hard drive used for?

A SATA (Serial ATA) hard drive is used in desktops, laptops, servers, and NAS systems for data storage. It’s the most common hard drive type, offering a balance of speed, affordability, and wide compatibility.
2. What’s the difference between SATA I, II, and III?

The difference is speed. SATA I supports up to 1.5 Gb/s (150 MB/s), SATA II up to 3 Gb/s (300 MB/s), and SATA III up to 6 Gb/s (600 MB/s). Most modern drives use SATA III but remain backward compatible with older versions.
3. Are SATA hard drives compatible with older systems?

Yes. SATA drives are backward compatible, meaning a SATA III drive can work on a SATA II or I port, though performance will be limited to the slower speed of the system.
4. What’s the maximum capacity of a SATA hard drive?

SATA hard drives come in a wide range of capacities, from 500GB to over 20TB. This makes them suitable for everything from basic desktop use to large-scale data storage and backup.
5. Can I use a SATA hard drive in RAID or NAS systems?

Yes. SATA drives support RAID configurations and can be used in NAS systems. For higher reliability, enterprise-grade SATA models such as NAS, surveillance, or data-center drives are recommended.
6. What is the difference between a 2.5" and a 3.5" SATA hard drive?

2.5" SATA drives are smaller and commonly used in laptops or compact systems, while 3.5" SATA drives are larger and primarily used in desktops, servers, and NAS devices.
7. How do SATA hard drives compare to SSDs?

Both use the SATA interface, but HDDs store data on spinning disks while SSDs use flash memory. SSDs are much faster, but SATA HDDs remain more affordable for high-capacity storage.