Seagate ST940811A 2.5" IDE Hard Drive

Seagate Part #/MPN: ST940811A

DiscTech Item #: SGT-ST940811A-BN-5Y

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Capacity: 40GB

Speed: 5,400RPM

Interface Types: IDE ATA 2.5in IDC44M for laptop

Form Factor: 2.5inx9mm Fits Most laptops

Sector Size: 512 / 512e

Average Seek Time: 12.5 / 14.5

Electrical Interface: EIDE Ultra ATA100 100MBps

On-Board Cache: 8MB

Seagate Momentus 5400 FDE.2  ST940811A 40GB 5.4K 2.5" IDE Hard Drive - Brand New

Seagate Momentus 5400 FDE.2  ST940811A 40GB 5.4K 2.5" IDE Hard Drive - Brand New

The Seagate® Momentus® 5400 FDE.2 hard drive is a hardware-based full disk encryption  drive that offers the most advanced data protection to personal and corporate laptop users. The Seagate Momentus 5400 FDE.2 hard drive is easy to use—a user password for authentication ensures that the entire hard drive is secured by strong encryption technology.

Beyond passwords and fingerprint authentication, Momentus FDE drives provide a deeper layer of protection for data at rest.

Key Features and Benefits

  • Total data encryption, all the time
  • Convenient and easy to use
  • Investment protection
  • Instant encryption performance matches drive interface throughput
  • Compatible with trusted platform modules
  • 5-year warranty
  • Protected passwords
  • Efficient implementation and flexibility
  • Secure lock using ATA commands
  • Strong key protection
  • Fast and thorough drive repurposing
  • Easy and complete elimination of data from the hard drive
  • Pre-boot authentication
  • Seagate proprietary DriveTrust Technology for higher security
  • AES encryption

Drive specification


Formatted Gbytes (512 bytes/sector)


Bytes per sector


Spindle speed (RPM)


Guaranteed sectors


I/O data transfer rate (Mbytes/sec max)


Cache buffer

8 Mbytes

Height (max)

9.5 mm (0.374 inches)

Width (max)

69.85 mm (2.75 inches)

Length (max)

100.50 mm (3.957 inches)

Weight (max) grams


Track-to-track seek time (msec typical)

0.8 (read), 1.0 (write)

Startup current (typical) 12V (peak)

1.0 amps

Click here to view the manufacturer's item description/brochure

Weight: 1 lb

Warranty: 5 Year Manufacturer

Brand New

Condition Levels Explained

The product is brand new.

5 Year Manufacturer Warranty

Product Warranties Explained

The product has a manufacturer warranty for the time period specified.