LogoBuyChoice
  • Features
  • Pricing
  • Products
  • Blog
  1. Home
  2. Products
  3. Storage
  4. Seagate
Seagate Laptop Thin 500 GB 7200RPM SATA 6 GB/s 32 MB Cache 2.5 Inch Hard Disk Drive (ST500LM021)
Seagate

Seagate Laptop Thin 500 GB 7200RPM SATA 6 GB/s 32 MB Cache 2.5 Inch Hard Disk Drive (ST500LM021)

4.6(2.7K+ reviews)
Amazon's Choicebudget$0-$49100+ bought in past month
#67 in Internal Hard Drives
capacity
500 GB
interface
Serial ATA-600
compatible
Laptop
drive type
Serial ATA-600
form factor
2.5 Inches

Want the best price and purchase timing?

Our AI advisor analyzes real-time pricing across all channels to find you the best deal.

AI Verdict

A 500GB, 7200RPM, 2.5-inch SATA 6Gb/s HDD with a 7mm z-height, best for older laptop upgrades or secondary storage.

Situational Fit

This 7200RPM, 7mm thin HDD is a specific upgrade for older laptops or as a secondary drive where space is tight and budget is the main concern. Its mechanical nature means it cannot match SSDs in speed or durability, making it a niche choice.

If you need significantly faster boot times and application loading, look for a 2.5-inch SATA SSD with at least 500GB capacity.

Regret Score™

Medium Risk

Lower is better — measures purchase-regret risk from real buyer complaints, review credibility, and product maturity

39/100
vs. 731 Storage we've analyzedSafer than 34%
Hidden Defects
17/35

Issues discovered after purchase

Achilles' Heel
3/25

Critically weak dimension

Expectation Gap
8/20

Amazon rating vs actual quality

Fit Risk
11/20

Chance this product isn't for you

BuyChoice Score
3.1

Pros

  • 7200RPM spin speed offers faster data access than typical 5400RPM laptop HDDs.
  • Thin 7mm z-height form factor fits ultrabooks and slim computing devices.
  • SATA 6Gb/s interface provides modern connectivity for mechanical drives.
  • 32MB cache helps with quicker data transfer rates for an HDD.
  • Operates quietly, minimizing noise disruption during use.
  • Easy to install as a replacement or upgrade in compatible laptops.

Cons

  • Still a mechanical hard drive, significantly slower than any Solid State Drive (SSD).
  • 500GB capacity can be limiting for modern operating systems and large applications.
  • Some users report early failures or receiving 'dud' drives.
  • Warranty coverage can be problematic, especially when purchased from third-party sellers.
  • Price-to-space ratio might not be competitive compared to larger capacity HDDs or budget SSDs.

Dimension Scores

Read/Write Speed6/10

7200RPM is faster than typical laptop HDDs (5400RPM) but significantly slower than any SSD.

Reliability4/10

While some users praise its reliability, there are recurring reports of early failures and 'duds'.

Capacity Fit5/10

500GB is an entry-level capacity for a laptop HDD, suitable for basic use but quickly filled with modern software and media.

Compatibility8/10

Its 2.5-inch form factor, 7mm z-height, and SATA 6Gb/s interface make it widely compatible with most laptops and gaming consoles.

Best For

  • Upgrading older laptops with 2.5-inch, 7mm drive bays.
  • Secondary storage in laptops or custom PCs (with appropriate mounting).
  • Budget gaming setups for storing game files (not primary OS drive).
  • Expanding storage for gaming consoles like PS4 or Xbox.

Not Recommended For

  • Primary drive in new systems expecting fast boot and application load times.
  • Users requiring high-capacity storage for extensive media libraries.
  • Critical data storage without a robust backup solution due to reported reliability concerns.
  • Anyone expecting SSD-level performance for daily tasks.

Watch Out For

  • Some buyers received drives with adhesive residue or signs of prior installation, raising concerns about product integrity.
  • Reports of drives failing prematurely, with Windows reporting drive failure within 7 months of use.
  • Compatibility issues where the drive doesn't power up or isn't recognized in BIOS/Windows, despite working in external enclosures.
  • Seagate may not honor warranty claims for products purchased from third-party vendors.

Full Specifications

ASINB00ISKS416
BrandSeagate
ColorSilver
SeriesLaptop Thin
Hard Drive500 GB Serial ATA-600
Item Weight3.17 ounces
ManufacturerSeagate
Special FeatureQuietStep, Ramp Load
Flash Memory Size500 GB
Hardware PlatformPC
Installation TypeInternal Hard Drive
Item model numberST500LM021
Compatible DevicesLaptop
Product Dimensions3.96 x 2.8 x 0.3 inches
Hard Disk InterfaceSerial ATA-600
Hard Drive InterfaceSerial ATA-600
Hard Disk DescriptionSerial ATA-600
Hard Disk Form Factor2.5 Inches
Item Dimensions LxWxH3.96 x 2.8 x 0.3 inches
Connectivity TechnologySATA
Digital Storage Capacity500 GB
Hard Drive Rotational Speed7200 RPM
Standing screen display size2.5 Inches
Is Discontinued By ManufacturerNo

What Buyers Say

Many users report receiving drives that appeared to have been previously installed or used, with adhesive residue on the sides, raising concerns about product authenticity and warranty coverage. Despite these initial concerns, the drive often formats correctly, but some users experience failures within months of use, with Windows reporting drive failure. The 7200RPM speed is frequently highlighted as a noticeable upgrade over slower 5400RPM drives, making it a popular choice for breathing new life into older laptops.

“Man, I needed something to speed up my old laptop without breaking the bank, and this 7200RPM drive actually made a difference, but I'm still worried about it dying on me like some others said.”

Common Praise

  • Noticeably faster performance compared to 5400RPM laptop hard drives.
  • Fits perfectly in ultrabooks and slim devices due to its 7mm z-height.
  • Operates quietly, minimizing noise disruption.
  • Easy to install as a replacement or upgrade in compatible systems.

Common Complaints

  • Reports of drives failing prematurely, sometimes within 7 months of purchase.
  • Some users received drives with signs of prior use or tampering, like grey adhesive residue.
  • Difficulty with warranty claims if purchased from third-party sellers.
  • Occasional 'duds' that lock up or fail diagnostics upon initial setup.

Ownership Tips

  • The perceived speed boost over 5400RPM drives is real for everyday tasks, but don't expect SSD performance.
  • The thin 7mm profile is genuinely useful for fitting into tight laptop chassis.
  • Keep an eye on SMART data, as some drives might show signs of age even when new.
  • Back up your data regularly, given the reported failure rates.

Frequently Asked Questions

Is this drive compatible with all laptops?

It's a 2.5-inch SATA drive with a 7mm z-height, designed for laptops. Most laptops with a 2.5-inch bay should be compatible, but some specific models might have power delivery or BIOS recognition issues.

How fast is this drive compared to other laptop hard drives?

With 7200RPM, it's faster than the more common 5400RPM laptop HDDs, offering quicker data transfer rates for a mechanical drive.

Can I use this in a desktop PC?

Yes, you can use it in a desktop PC, but you might need a 2.5-inch to 3.5-inch mounting bracket to secure it in a standard desktop drive bay.

What is the z-height of this drive?

The drive has a 7mm z-height, which makes it suitable for ultrabooks and slim computing devices.

Is this drive suitable for gaming?

For an HDD, its 7200RPM speed and 32MB cache make it a decent choice for storing games, but loading times will still be significantly slower than an SSD.

What is the warranty like for this drive?

Some users have expressed concerns about warranty coverage, especially when purchasing from third-party vendors, with Seagate sometimes not honoring claims.

Buying Guide

When you're looking at hard drives for your laptop, you're mainly balancing speed, capacity, and physical size. This 2.5-inch drive is a mechanical spinning disk, which means it's generally slower than an SSD but offers more storage for your money at higher capacities. The 7200RPM speed is a key factor here, as it's faster than the more common 5400RPM drives found in many older laptops.

Capacity (500 GB)

Think of this like the size of your digital closet. 500GB is enough for your operating system, essential programs, and a decent amount of documents and photos, but it fills up fast if you have a lot of large games or media files.

RPM (7200)

This is how fast the platters inside the drive spin, like how fast a record player spins. Higher RPM (7200 vs. 5400) means the drive can find and read data quicker, making your laptop feel a bit snappier for an HDD.

Form Factor (2.5 Inches) & Z-Height (7mm)

This is the physical size of the drive. 2.5 inches is standard for laptops, and the 7mm 'z-height' (thickness) is particularly slim, ensuring it fits into thinner laptops and ultrabooks.

Alternatives

If you need significantly faster performance for your operating system and applications, look for a 2.5-inch SATA Solid State Drive (SSD) with similar capacity. If you need much more storage, consider a 1TB or 2TB 2.5-inch HDD, though they might be 9.5mm thick.

You Might Also Like

Seagate IronWolf Pro SATA III 3.5" Internal NAS Hard Drive, 2-Pack - 8TB
Strong Fit
Seagate

Seagate IronWolf Pro SATA III 3.5" Internal NAS Hard Drive, 2-Pack - 8TB

$300-$599
8TBSATA III

A 2-pack of 8TB 7200 RPM CMR internal hard drives with 256MB cache, built for 24/7 multi-bay NAS environments.

QNAP TS-453E-8G-US 4 Bay High-Performance Desktop NAS with Intel Celeron Quad-core Processor, 8 GB DDR4 RAM and Dual 2.5GbE (2.5G/1G/100M) Network Connectivity (Diskless)
Situational
QNAP

QNAP TS-453E-8G-US 4 Bay High-Performance Desktop NAS with Intel Celeron Quad-core Processor, 8 GB DDR4 RAM and Dual 2.5GbE (2.5G/1G/100M) Network Connectivity (Diskless)

$600+
8 GBNVMe

A 4-bay diskless NAS with an Intel Celeron J6412, 8GB DDR4 RAM, dual 2.5GbE, and M.2 NVMe slots for businesses needing long-term support.

Seagate Exos 28TB Internal Hard Drive HDD - 3.5 in CMR SATA 6Gb/s, 7200 RPM, 512MB Cache, 2.5M MTBF - ST28000NM000C (Renewed)
Situational
Amazon Renewed

Seagate Exos 28TB Internal Hard Drive HDD - 3.5 in CMR SATA 6Gb/s, 7200 RPM, 512MB Cache, 2.5M MTBF - ST28000NM000C (Renewed)

$300-$599
28 TBSerial ATA-600Desktop

This 28TB, 7200 RPM, 3.5-inch CMR SATA 6Gb/s renewed hard drive is for serious data hoarders needing massive capacity at a lower price point.

1TB G-Drive ArmorATD Rugged, Durable Portable External HDD, Up to 130MB/s, USB-C (5Gbps), USB 3.2 Gen 1 – SDPHE1G-001T
Situational
Western Digital

1TB G-Drive ArmorATD Rugged, Durable Portable External HDD, Up to 130MB/s, USB-C (5Gbps), USB 3.2 Gen 1 – SDPHE1G-001T

$50-$99
1 TBUSB 3.0Laptop

A 1TB mechanical hard drive with a 130MB/s read speed and USB-C (5Gbps) connectivity, built for users needing rugged, portable storage for school or creative projects.

LogoBuyChoice

Avoid bad products before you buy. Real data. Zero bias.

GitHubX (Twitter)BlueskyYouTube
Built withLogo of MkSaaSMkSaaS
Product
  • Features
  • Pricing
  • FAQ
Resources
  • Blog
  • Changelog
  • Roadmap
Company
  • About
  • Contact
  • Waitlist
Legal
  • Cookie Policy
  • Privacy Policy
  • Terms of Service
© 2026 BuyChoice. All Rights Reserved.