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Item#: N82E16822178573

Seagate ST500LM021 500GB 7200 RPM 32MB Cache SATA 6.0Gb/s 2.5" Laptop Thin Hard Drive

  • 7.00mm height, 2.5", SATA 6Gb/s
  • Seagate SmartAlign technology provides easy transition to 4K sectors
  • Compatible with SATA 3Gb/s designs

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews
ST500LM021

Slim, Light Hard Drive with Loads of Features


Thin Laptop Computing Savvy
ST500LM021 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™ technology provides easy transition to 4K sectors
  • Available as a Self-Encrypting Drive (SED) and FIPS 140-2 SED2
  • Compatible with SATA 3Gbps designs
  • Backed by a 2-year limited warranty

ST500LM021

Opens New Frontiers for System Designers

Seagate has purpose-built the Laptop Thin HDD to meet our customers' demand for affordable, slimmer, fully functional computing solutions. Meet your needs with 500GB, 320GB, 250GB and 160GB capacity options.

While traditional laptop hard drives offer a z-height of 9.5mm, the Laptop Thin HDD stands apart with a z-height of just 7mm.


ST500LM021

Smooth Migration to Advanced Format 4K

Laptop Thin HDDs include Seagate SmartAlign technology. This innovation helps you easily get all the benefits of the new Advanced Format 4K sector standard - no utilities, no extra steps. AF drive migration happens automatically in the background. The drive's performance is not affected, and there is no need for time-consuming utilities required by other AF-enabled drives.


Secure Self-Encrypting Drive Options

Seagate Laptop Thin Self-Encrypting Drives deliver government-grade encryption without performance degradation - protecting your data where it lives. You get all the benefits of secure data encryption without the headaches.
  • Ships with the Trusted Computing Group (TCG) Opal protocol
  • The world's first 7mm SED to ship with FIPS 140-2 validation
  • Instant on-the-fly encryption without performance degradation
  • Instant Secure Erase™ technology that can instantly erase the security key data on your hard drive, enabling secure disposal or repurposing of the SED

ST500LM021

Enter Seagate Ingenuity

Until recently, system integrators and OEMs had no choice but to limit their thinner, fully functional computing designs to high-end devices. The available hard drive options were either too costly, too slow performing or both.

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.


ST500LM021 Thin Hard Drive Perfect For:

  • Building entry-level to high-performance ultraportables laptops
  • Creating thin, light netbooks without compromising storage or affordability
  • Designing slim consumer electronics devices
  • Protecting your sensitive data

ST500LM021 Momentus® Thin 5400.9 SATA 500GB Hard Drive ST500LT025 Laptop Thin HDD 500GB Hard Drive ST500LM021 Momentus® Thin 5400.9 SATA 500GB Hard Drive ST500LT015 Momentus® Thin 5400.9 SATA 500GB Hard Drive ST500LT012 Momentus® Thin 5400.9 SATA 320GB Hard Drive ST320LT012 Laptop Thin HDD 320GB Hard Drive ST320LM010 Momentus® Thin 5400.9 SATA 250GB Hard Drive ST250LT012
Capacity 500GB 500GB 500GB 500GB 320GB 320GB 250GB
Interface SATA 3Gbps SATA 3Gbps SATA 3Gbps SATA 3Gbps SATA 3Gbps SATA 3Gbps SATA 3Gbps
Spin Speed 5400RPM 7200RPM 5400RPM 5400RPM 5400RPM 7200RPM 5400RPM
Cache 16MB 32MB 16MB 16MB 16MB 32MB 16MB
Areal Density 705 670 705 705 705 670 705
Encryption Yes   Yes        
Maximum Operating Shock 400Gs 400Gs 400Gs 400Gs 400Gs 400Gs 400Gs
Length 100.55mm 100.55mm 100.55mm 100.55mm 100.55mm 100.55mm 100.55mm
Width 70.10mm 70.10mm 70.10mm 70.10mm 70.10mm 70.10mm 70.10mm
Height 7.0mm 7.0mm 7.0mm 7.0mm 7.0mm 7.0mm 7.0mm
Operating Temperature 140°F (60°C) 140°F (60°C) 140°F (60°C) 140°F (60°C) 140°F (60°C) 140°F (60°C) 140°F (60°C)
Average Operating Power 1.2W 1.5W 1.2W 1.2W 1.2W 1.5W 1.2W

Learn more about the Seagate ST500LM021

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 2 years
  • Limited Warranty period (labor): 2 years
  • Read full details

Customer Reviews of the Seagate ST500LM021

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  • Steven T.
  • 2/20/2016 3:25:53 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

3 out of 5 eggsPerforms...But

Pros: Is decent for a basic duty laptop.

Cons: The drive failed after eight months of usage. No warranty through Seagate.

Other Thoughts: Under basic load like Facebook, some games like The Sims 3-4 and basic internet usage the drive is nice and decent but after eight months the drive failed. I have owned several Seagate products in the past and have never had a drive fail. In fact I still have a hard drive for my desktop from 2007 that still runs like a charm. This particular drive must have just been in a bad batch.

1 out of 1 people found this review helpful. Did you? Yes No

  • Daniel V.
  • 2/19/2016 6:48:41 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsfonctionne bien

Pros: comforme

Cons: très facile a intaller

1 out of 1 people found this review helpful. Did you? Yes No

  • John H.
  • 1/23/2016 11:02:46 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsSeagate ST500LM021 500GB 7200 RPM 32MB Cache SATA 6.0Gb/s 2.5" Laptop Thin Hard Drive

Pros: Went right in as a replacement drive with no trouble. Works well. Is a vast improvement over the 5400rpm 8meg cache drive that it replaced. Got it on sale. Newegg is awesome!

Cons: No con really for my application. There could be issue with some laptops for the thickness. Some laptops have a mounting system that would not work with the thin size of this.

Other Thoughts: It took the operating system right in and works like a champ.

1 out of 1 people found this review helpful. Did you? Yes No

  • Jonatan S.
  • 12/1/2015 4:55:33 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsGreat

Pros: Works good, fast and no problems

Cons: none

Other Thoughts: great buy was on special.

1 out of 1 people found this review helpful. Did you? Yes No

  • Anonymous
  • 11/23/2015 7:03:11 PM
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsAwesome

Pros: Shipped fast, very thin, quiet. Upped my Windows score by 3 pts.

Cons: None

Other Thoughts: Very good buy

Did you find this review helpful? Yes No

  • Julie M.
  • 9/15/2015 9:50:17 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsseagate st500LMo21 500gb Laptop thin hard drive

Pros: very fast getting here and was packaged in a secure box. went right in to my laptop to replace my broken drive and purred like a kitten started right up and no problem imputing my back up disks so now I can play games like a champ, thank you for the great price and product. Not it runs cool.

Cons: hums a little.

0 out of 1 people found this review helpful. Did you? Yes No

  • Brooke N.
  • 9/6/2015 7:41:59 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsGreat laptop drive

Pros: Faster boot than the stock drive in my bootcamped Mac Book Pro with Yosimite and Windows 10. So far so good. Very good read and write speeds tested for a platter drive.

Cons: None so far.

0 out of 1 people found this review helpful. Did you? Yes No

5 out of 5 eggsDecent Drive

Pros: Decent Hdd, No errors detected from the start. Runs, works great and no issues installing in a laptop with Windows 10 running.

Cons: None so far

Other Thoughts: Thinner than most 2.5" drives however if your laptop uses any type of mounting bracket then it should work just fine. If it relies on fitting into the slot with any bracket, may want to be a little cautious, although you could always put a small folded piece of paper or two to help support if it wiggled any.

1 out of 1 people found this review helpful. Did you? Yes No

  • Caribbean L.
  • 7/23/2015 1:29:04 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsHard Drive Failure Within 6 Months

Pros: Price
Specs
Name Brand

Cons: Reliability

Other Thoughts: Purchased 1/18/15.

Failed early July 2015. OEM hard drive lasted 4 years. The last 12 months with the same user under similar conditions.

1 out of 1 people found this review helpful. Did you? Yes No

  • Michael D.
  • 7/8/2015 1:50:55 PM
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsWorks Ok for HDD

Pros: Works as advertised. Not sure on the transfer rate but reaction time is normal for a HDD. Used in a Toshiba laptop. Had to turn off the EUFI BIOS to legacy in order to install windows 7.

Cons: Rather loud however it is a HDD and works so no biggie.

Other Thoughts: Only bought to make a laptop work again and speed was not a needed factor.

1 out of 1 people found this review helpful. Did you? Yes No

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Item#: N82E16822178573
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