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The Seagate® Momentus® 7200.3 laptop hard drive delivers industry-leading 7200-RPM performance while offering the industry's lowest power consumption levels. Available with G-Force Protection™ for added robustness and durability, the Momentus 7200.3 drive can withstand even the most serious of drops that can happen in a mobile environment. Available with 16 MB of cache and a SATA 3Gb/s NCQ interface, the Momentus 7200.3 hard drive is perfect for performance laptops, workstations and small form factor desktop systems.

Key Adavantages:

• Highest available notebook performance increases productivity in all environments.
• Developed with proven Seagate 7200-RPM laptop technology
• Capacity: 500GB
• SATA 3Gb/s NCQ interface
• 16-MB cache
• G-Force Protection™ available for added robustness in mobile environments
• Green features:
  • Leverages Seagate laptop power management technology, delivering the lowest-power 7200-RPM laptop hard drive yet
  • Utilizes ramp load features which remove the head from the disk during idle periods, improving idle power consumption and adding to the durability of the drive
• QuietStep™ ramp load technology enables ultra-quiet load/unload acoustics
• Perpendicular recording technology
• Seagate 3-year Factory warranty

Best-Fit Applications:

• Performance laptops
• Workstations
• Small form factor PCs

Specification:

Model Number	ST9500420AS
Interface	SATA 3.0Gb/s
Cache	16 MBytes
Capacity	500GB
Areal density (avg) ¡¡	253 Gbits/inch2
Guaranteed Sectors ¡¡	625,142,448
PHYSICAL
Height (max) ¡¡	9.5 mm (0.374 inches)
Width (max) ¡¡	69.85 mm (2.75 inches)
Length (max) ¡¡	100.5 mm (3.957 inches)
Weight (typical) ¡¡	110 grams (0.238 pounds)
PERFORMANCE ¡¡
Spindle Speed ¡¡	7,200 rpm
Average latency ¡¡	4.17 msec
Random read seek time ¡¡	11.0 msec
Random write seek time ¡¡	13.0 msec
RELIABILITY ¡¡
Annual Failure Rate	0.48
POWER
5V start max current	1.0 amps

Package Includes:

• Seagate 2.5" 500GB SATA 7200RPM 16MB Cache Notebook hard drive
• 3 Year Warranty