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Innovative hard drive features for every laptop.

Momentus® laptop hard drives deliver feature-rich performance and innovative upgrades with capacity points up to 750 GB.

  • G-Force Protection™ technology can protect your data even if you drop your laptop
  • Seagate® Smart Align™ technology for a simple, utility-free transition to the new Advanced Format 4K sector standard
  • Self-Encrypting Drive (SED) models, including FIPS 140-2 Validated SED for government-grade security*

*Not available in all countries. TM: The FIPS logo is a certification mark of NIST, which does not imply endorsement by NIST, the U.S., or Canadian governments.

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  • Mac Icon

    Mac OS

     
  • Windows 7 Compatible

    Windows 7 32 and 64-Bit

     
  • Windows Vista Icon

    Windows Vista 32 and 64-Bit

     
  • Windows XP Icon

    Windows XP

     
momentus laptop overview laptop and parachute icon

Data protection for dropped laptops.

Optional Seagate G-Force Protection technology helps protect the data stored on your Momentus hard drive if you drop your laptop.

More Momentus drive features
momentus laptop overview drive and 4K icons

Easily migrates to Advanced Format.

Select Momentus laptop hard drives 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.

Learn more
momentus laptop overview drive with lock icon

Secure Self-Encrypting Drive options.

Momentus Self-Encrypting Drive (SED) options can securely protect your data where it lives–on the hard drive–without affecting performance. You get all the benefits of secure data encryption without the headaches.

More Momentus drive features

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Features

momentus laptop feature laptop and parachute icon

G-Force Protection™ technology.

Optional upgrades for Momentus® laptop hard drives include Seagate® G-Force Protection technology.

When G-Force Protection technology detects that your hard drive has been dropped, it instantly swings the drive heads to a safe zone away from the storage disk. This can keep your critical data safe and recoverable at impact, even if your laptop does not survive.

momentus laptop feature 4K icon

SmartAlign™ technology for easy 4K migration.

A change is coming to the hard drive industry. The smallest sector of organized data on a drive is moving from 512 to 4,096 bytes. The new format, known as Advanced Format (AF) 4K, offers advantages like increased efficiency, but migrating your drive can be challenging.

Luckily, Seagate is ready to help you make a seamless transition to 4K sectors.

Select Momentus laptop hard drives feature Seagate SmartAlign technology, which automatically does the work of AF migration 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.

Smart.

momentus laptop feature drive and lock icon

Optimal security with Self-Encrypting Drives.

Momentus laptop hard drives are available as a Self-Encrypting Drive (SED)* that protects your data the instant you save it to your drive. For government-grade security, Momentus internal hard drives can also be purchased as a FIPS 140-2 Validated SED.**

Lost laptop? Rest easy knowing that your data is protected and 100% encrypted–always.

Select Momentus laptop hard drives features include:

  • Instant on-the-fly encryption without performance degradation
  • SecureErase™ technology can instantly erase the secure key data on your hard drive, enabling safe and easy disposal or repurposing of the drive

*SED models not available in all countries.

**Not available in all countries. See FIPS 140-2 Level 2 Certificate. TM: The FIPS logo is a certification mark of NIST, which does not imply endorsement by NIST, the U.S., or Canadian governments.

Specifications

 
Generation 7200.4 7200.2 5400.6
Capacity 750GB 500GB 320GB 250GB 320GB 250GB 500GB 320GB 250GB
Show me :
Form Factor 2.5" 2.5" 2.5" 2.5" 2.5" 2.5" 2.5" 2.5" 2.5"
Interface Options SATA 3Gb/s SATA 3Gb/s SATA 3Gb/s SATA 3Gb/s SATA 3Gb/s SATA 3Gb/s SATA 3Gb/s SATA 3Gb/s SATA 3Gb/s
Performance                  
Spindle Speed (RPM) 7200 7200 7200 7200 7200 7200 5400 5400 5400
Cache (MB) 16 16 16 16 16 16 8 8 8
Transfer Rate, Max Ext (MB/s) 300       300 300 300 300 300
Sustained Data Rate OD                  
Average Latency (ms) 4.2 4.17 4.17 4.17 4.17 4.17 5.6 5.6 5.6
Reliability/Data Integrity                  
Nonrecoverable Read Errors per Bits Read 1 in 1014       1 in 1014 1 in 1014 1 in 1014 1 in 1014 1 in 1014
Annualized Failure Rate (AFR) 0.5% 0.5% 0.5% 0.5% 0.48% 0.48% 0.48% 0.48%% 0.48%
Power Management                  
Seek, Typical Operating (W) 2.5       1.60 1.60 1.54 1.54 1.54
Idle, Typical Operating (W) 0.96       0.66 0.66 1.40 1.40 1.40
Environmental                  
Temperature                  
Operating 0° to 60°C       0° to 60°C 0° to 60°C 0° to 60°C 0° to 60°C 0° to 60°C
Non-operating -40° to 70°C       -40° to 70°C -40° to 70°C -40° to 70°C -40° to 70°C -40° to 70°C
Shock                  
Operating: Gs (ms) 350 (2ms)       350 (2ms) 350 (2ms) 350 (2ms) 350 (2ms) 350 (2ms)
Non-operating: Gs (ms) 1000 (1ms)       1000 (1ms) 1000 (1ms) 1000 (1ms) 1000 (1ms) 1000 (1ms)
Acoustics (bels - sound power)                  
Idle 2.3       2.3 2.3 2.4 2.4 2.4
Operating 2.5       2.5 2.5 2.6 2.6 2.6
Physical                  
Height (in/mm) 0.370/9.5 0.370/9.5 0.370/9.5 0.370/9.5 0.374/9.5 0.374/9.5 0.374/9.5   0.374/9.5
Width (in/mm) 2.750/69.85 2.750/69.85 2.750/69.85 2.750/69.85 2.76/70.10 2.76/70.10 2.75/69.85   2.75/69.85
Length (in/mm) 3.951/100.35 3.951/100.35 3.951/100.35 3.951/100.35 3.959/100.55 3.959/100.55 3.957/100.35   3.957/100.35
Height (in/mm) (maximum)               0.374/9.5  
Width (in/mm) (maximum)               2.75/69.85  
Length (in/mm) (maximum)               3.957/100.35  
Weight (lb/g) 0.254/115 0.238/110 0.238/110 0.227/105 0.203/92 0.203/92 .218/98.8 0.218/98.8 0.206/93.5
Model Number Generation Package Capacity Interface Spindle Speed (RPM) Cache (MB) Areal Density Encryption Maximum Operating Shock Storage Type Length Width Height Typical Weight AFR Operating Temperature Average Operating Power
ST9750420AS 7200.4 Drive Only 750GB SATA 3Gb/s 7200RPM 16MB 541   350Gs HDD 100.35mm 69.85mm 9.5mm 115g 0.5% 60°C  
ST9500420AS 7200.4 Drive Only 500GB SATA 3Gb/s 7200RPM 16MB 394     HDD 100.35mm 69.85mm 9.5mm 110g 0.5%    
ST9320423AS 7200.4 Drive Only 320GB SATA 3Gb/s 7200RPM 16MB 394     HDD 100.35mm 69.85mm 9.5mm 110g 0.5%    
ST9250410AS 7200.4 Drive Only 250GB SATA 3Gb/s 7200RPM 16MB 394     HDD 100.35mm 69.85mm 9.5mm 105g 0.5%    
ST320LT023 7200.2 Drive Only 320GB SATA 3Gb/s 7200RPM 16MB 425   350Gs   100.55mm 70.10mm 9.5mm 92g 0.48% 60°C 1.30W
ST250LT021 7200.2 Drive Only 250GB SATA 3Gb/s 7200RPM 16MB 425   350Gs   100.55mm 70.10mm 9.5mm 92g 0.48% 60°C 1.40W
ST9500325ASG 5400.6 Drive Only 500GB SATA 3Gb/s 5400RPM 8MB 394   350Gs   100.35mm 69.85mm 9.5mm 98.8g 0.48% 60°C 1.78W
ST9500325AS 5400.6 Drive Only 500GB SATA 3Gb/s 5400RPM 8MB 394   350Gs   100.35mm 69.85mm 9.5mm 98.8g 0.48% 60°C 1.78W
ST9320325AS 5400.6 Drive Only 320GB SATA 3Gb/s 5400RPM 8MB 394   350Gs         98.8g 0.48%% 60°C 1.78W
ST9250315AS 5400.6 Drive Only 250GB SATA 3Gb/s 5400RPM 8MB 394   350Gs   100.35mm 69.85mm 9.5mm 93.5g 0.48% 60°C 1.78W
STBD1000100   Kit 1TB SATA 3Gb/s 5400RPM 8MB                      
ST905003N1A1AS-RK   Kit 500GB SATA 3Gb/s 5400RPM 8MB                      
ST905003N3A1AS-RK   Kit 500GB SATA 3Gb/s 7200RPM 16MB       HDD              
ST903203N1A2AS-RK   Kit 320GB SATA 3Gb/s 5400RPM 8MB                      
ST90250N1A1AS-RK   Kit 250GB SATA 3Gb/s 5400RPM 8MB                      
ST9500423AS   Drive Only 500GB SATA 3Gb/s 7200RPM 16MB 541   350Gs HDD       115g 0.5% 60°C