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

by Seagate
395 customer reviews
| 82 answered questions
List Price: $74.99
Price: $38.76 & FREE Shipping
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500 GB
7200rpm
  • Slim and lightweight style with laptop encryption as option
  • Compatible with SATA 6Gb/s and 3Gb/s designs
  • Up to 500GB capacity
  • 7200 RPM options available
  • 2 year warranty
20 new from $35.00 7 used from $23.49

Frequently Bought Together

  • Seagate Laptop Thin 500 GB 7200RPM SATA 6 GB/s 32 MB Cache 2.5 Inch Hard Disk Drive (ST500LM021)
  • +
  • StarTech.com USB 3.0 to 2.5" SATA III Hard Drive Adapter Cable w/ UASP - SATA to USB 3.0 Converter for SSD/HDD - Hard Drive Adapter Cable
Total price: $51.64
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This item: Seagate Laptop Thin 500 GB 7200RPM SATA 6 GB/s 32 MB Cache 2.5 Inch Hard Disk Drive (ST500LM021)
Customer Rating 4 out of 5 stars (395) 4 out of 5 stars (2140) 4 out of 5 stars (1101) 4 out of 5 stars (805)
Price $38.76 $57.12 $47.23 $58.99
Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping
Sold By OEMGENUINE Amazon.com Amazon.com Amazon.com
Hard Disk Size 500 GB 500 GB 500 GB 750 GB
Speed 7200 RPM 5400 RPM 5400 RPM 7200 RPM
Form Factor 2.5 inch 2.5 inch 2.5 inch 2.5 inch
Hardware Interface sata 6 0 gb Information not provided sata 6 0 gb sata 6 0 gb
Cache Memory Installed 32 64 8 16
Add to Cart Add to Cart Add to Cart Add to Cart

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Product Description

Size:500 GB  |  Style:7200rpm

Seagate Laptop Thin HDD (Formerly Momentus Thin) Offers Feature-Rich, Slim, Lightweight Style at Price and Capacity Points That Enable No-Compromise Designs for Thin Computing
  • World's first 7mm z-height, 2.5-inch form factor drive
  • Seagate SmartAlign technology1 provides easy transition to 4K sectors
  • Available as a Self-Encrypting Drive (SED) and FIPS 140-2 SED2
  • Compatible with SATA 3Gb/s designs
  • Backed by a 2-year limited warranty



Seagate Laptop Thin
Feature-rich, light 7mm slim hard drive.



Seagate Laptop Thin
Ready for the future.

Opens New Frontiers for System Designers

Purpose-built to meet your demand for affordable, slimmer, fully functional laptop computing solutions. Choose from 500GB and 320GB capacity options. While traditional laptop hard drives offer a z-height of 9.5 mm, the Laptop Thin HDD stands part with a z-height of just 7mm.


Smooth Migration to Advanced Format 4K

With Seagate's SmartAlign technology,1 you get all the benefits of the new Advanced Format 4K sector standard—no utilities and no extra steps needed. Advanced format (AF) drive migration happens automatically in the background, and drive perforance is not affected, unlike the time-consuming utilities required by competitive AF-enabled drives.

1Seagate SmartAlign technology may not be available on all models. Please refer to the data sheets.


Secure Self-Encrypting Drive Options

Seagate delivers on government-grade encryption without any performance degradation, protecting date where it lives—on your drive.

  • Trusted Computing Group (TCG) Opal protocol
  • World's first 7mm SED to ship with FIPS 140-2 validation2
  • Instant on-the-fly encryption without performance degradation
  • Instant Secure Erase technology enables fast and easy secure drive retirement

2Self-Encrypting Drives (SED) and FIPS 140-2 Validated drives are not available in all models or countries.


Enter Seagate Ingenuity

Seagate Laptop Thin HDD drives leverage current laptop drives in both material and product design to provide the world's first 7mm 2.5-inch form factor drive. The result is affordable, thin storage for entry-level to mainstream laptops, high-end netbooks, thin ultraportables and slim-computing devices.

Seagate Laptop Thin
Thin Hard Drive Perfect For:
  • Building entry-level to high-performance ultraportable laptops
  • Creating thin, light netbooks without compromising storage or affordability
  • Designing slim consumer electronics devices
  • Protecting your sensitive data

Product Details

Size: 500 GB | Style: 7200rpm
Product Warranty: For warranty information about this product, please click here [PDF]
  • Product Dimensions: 0.3 x 2.8 x 0.3 inches
  • Shipping Weight: 0.3 ounces (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B00ISKS416
  • Item model number: ST500LM021
  • Average Customer Review: 4.5 out of 5 stars  See all reviews (395 customer reviews)
  • Amazon Best Sellers Rank:
    • Product Warranty: For warranty information about this product, please click here [PDF]
  • Date first available at Amazon.com: February 28, 2014

    •  Would you like to update product info or give feedback on images?
Customer Questions & Answers
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Customer Reviews

Most Helpful Customer Reviews

23 of 23 people found the following review helpful
Good Budget Replacement
By sgs3 on May 17, 2014
Style Name: 7200rpmSize: 500 GB Verified Purchase
Pros: very slim, good cache for a non-hybrid drive

Cons: kinda pricey for a HDD

Benchmark Results:
-----------------------------------------------------------------------
CrystalDiskMark 3.0.3 x64 (C) 2007-2013 hiyohiyo
Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 118.859 MB/s
Sequential Write : 117.474 MB/s
Random Read 512KB : 28.417 MB/s
Random Write 512KB : 56.697 MB/s
Random Read 4KB (QD=1) : 0.503 MB/s [ 122.8 IOPS]
Random Write 4KB (QD=1) : 0.790 MB/s [ 192.8 IOPS]
Random Read 4KB (QD=32) : 0.992 MB/s [ 242.2 IOPS]
Random Write 4KB (QD=32) : 0.795 MB/s [ 194.0 IOPS]

Test : 1000 MB [C: 26.3% (122.0/464.8 GB)] (x5)
Date : 2014/05/17 12:22:16
OS : Windows 8.1 [6.3 Build 9600] (x64)

Why this:
Got it as a replacement for an old WD 500gb 5400rpm that came in the laptop after it failed. Worked just fine from the beginning, windows re-installed without a hitch, and the performance is much better than the drive it replaced. Of course, its not nearly the performance of a SSD, but at the time of purchase, a 500 GB SSD was 4-5 times the price.
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18 of 19 people found the following review helpful
Started to Fail After 7 Months
By Mark Funk on March 21, 2013
Style Name: FIPS 140-2 CertifiedSize: 320 GB
For the first 5 months of using this drive in a Dell Precision laptop, it worked great. Then I started noticing sluggish performance. At first I thought it was a fragmented drive or the virus scan, but that was not the case. At month 7, Windows started telling me that the drive was failing. It was especially noticeable when swapping large files with virtual memory. Using Seagate's SeaTools test tool, I confirmed that the SMART test and Short DST test failed. This is my third Seagate laptop drive to fail in the past 2 years.
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19 of 22 people found the following review helpful
Works Like a Charm
By Amazon Customer TOP 1000 REVIEWERVINE VOICE on April 24, 2014
Style Name: 7200rpmSize: 500 GB Vine Customer Review of Free Product ( What's this? )
This is a slim hard drive suitable for computers where space is at a premium, such as thin laptops. As a 2.5" drive, it will fit in standard laptop hard drive slots, 2.5" external drive enclosures, or desktop computers with mounting hardware for 2.5" drives. But since this drive is only 7mm thick, it can be squeezed into a really tight hard drive enclosure, making it ideal for really slim laptops. The 500GB capacity should be enough for most general users, and the 7200 RPM speed means you won't be sitting twiddling your thumbs waiting for your programs to load. The 32 Mb cache also helps make this drive plenty zippy.

The drive arrives brand new, unformatted. In order to use it, you're going to need to install it and format it. If this will be your new primary drive, you can physically install it in your computer (just unscrew the hard drive enclosure and match up the plugs. Really--it won't hurt anything as long as you keep your fingers away from the electronics). Then you will need your operating System disks (good luck with that, since they don't ship them anymore). If you are lucky enough to have such disks, plop them in the CD drive, and they will guide you through the installation process.

If this is going to be a secondary disk, the process is a bit easier, since you can format the disk from a computer that already has a functioning operating system. To start, physically install the disk either in a secondary disk enclosure or a 2.5" external drive enclosure. Once the drive is physically hooked up to a computer with an operating system, you need to format it. Formatting is a bit like telling the disk what size pages and lines you want for your notebook, how much space between the lines and all.Read more ›
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9 of 9 people found the following review helpful
Perfect for PS3 upgrade
By thePproject on February 4, 2014
Style Name: 5400rpmSize: 500 GB Verified Purchase
This drive is very quiet and seems to run just as smooth as any drive that comes with a brand new PS3. I seem to notice a little bit of a faster load time (by seconds, nothing too major but definitely helpful overall) in all things including boot up, going into the PSN store and games loading from the HDD or running with install data from a disc. Some might say the PS3 doesn't work any faster than what is accepted by the system, but the double cache size does make a noticable difference to me. I used to be a Western Digital fan until I had 3 of their laptop drives die after 3 years of use. I understand that electronics and computer components do not last forever but 3 years or less is not acceptable. I have PC hard drives that lasted 5 or more years before starting to show signs of problems. The WD drives all became useless and had more bad sectors than the drive could handle in less than 3 years. I decided to make a change to Seagate due to the technology of the data access that the Momentus offers and due to the low price offered for the features. If you are looking for a fast, high capacity drive for your PS3 then look no further. And if you can get this drive through a Warehouse deal with a "Like New" status then save the extra few bucks and buy it, you'll be glad you did.
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17 of 20 people found the following review helpful
Seagate Laptop Replacement Hard DisK Drive
By M. Hill TOP 500 REVIEWER on May 11, 2014
Style Name: 7200rpmSize: 500 GB Vine Customer Review of Free Product ( What's this? )
This hard disk drive (HDD) was used to replace the one in my Dell computer because it uses a new twice as fast SATA interface and it has a much larger cache buffer (32 vs. 8 MB). First step -- I used the Windows Image Backup (Control Panel / System and Security / File History / System Image Backup) to create an image of the internal HDD. Then I created a bootable recovery disk on a thumb drive (Control Panel / System and Security / File History / Recovery / Create a Recovery Drive).

After shutting down the laptop, I unplugged it and removed the battery, took the back off, removed the HDD, replaced it with the new one, and put everything back together. Then, I inserted the recovery thumb drive in a USB port, turned the computer on and pressed F12 (for Dell machines.)

After trying to figure out which drive to use I selected "removable storage" and it found the thumb drive automatically. Once it booted from the thumb drive, I connected the external HDD before selecting an item from the menu that appeared after booting. After that, Windows found the most recent image and then prompted to copy it. I pressed enter, and the image copied to the new HDD and the machine rebooted. When it finished, everything looked identical to the way it appeared before.

I copied several large video files from the old HDD to the external drive before switching to the new one. I noticed that they averaged a copying speed of about 20 Mb per second. Afterwards, I copied them back and forth and noted that they now averaged over 30 Mb per second, more than a 50% increase. The new drive has been in use for about two weeks, and overall system performance is noticeably snappier. Battery life is about the same as before, and the new hard disk is quieter than the original and has not caused any noticeable problems, such as overheating, vibration, etc. Impressed.
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