500GB Seagate ST500LM021 2.5" 7200rpm Momentus Thin Notebook SATA 3Gb/s HDD - Computer Alliance
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500GB Seagate ST500LM021 2.5" 7200rpm Momentus Thin Notebook SATA 3Gb/s HDD

Web ID: 12346

The World’s First 7 mm, 2.5 Inch Form Factor Drive, 500GB Capacity, 7200rpm, SATA 3Gb/s, 32MB Cache
Manufacturer PN: ST500LM021
GTIN: 7636490052293
Warranty: 1 Year
Manufacturer Website

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.

  • The 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


1TB laptop thin 7mm slim form factor

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 9.5 mm, the Laptop Thin HDD stands apart with a z-height of just 7mm.


Reliable HDD storage laptop 5mm thin design

Smooth Migration to Advanced Format 4K


Laptop Thin HDDs include Seagate SmartAlign technology1. This innovation provides easy access to 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 the time-consuming utilities that are required by other AF-enabled drives. 

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


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 be shipped with FIPS 140-2 validation2
  • Instant on-the-fly encryption without performance degradation
  • Instant Secure EraseTM technology that can instantly erase the security key data on your hard drive, enabling secure disposal or repurposing of the SED

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


Momentus Thin Features 1 Seagate logo

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, performed too slowly, 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.



Thin Hard Drive Perfect For:


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