Product details:

Seagate ST1000NX0333 1 TB 2.5 Internal Hard Drive - SAS - 7200rpm - 128 MB Buffer RPM 128MB 2.5IN
Hard Drive Capacity:1 TB
Internal/External:Internal
Brand:Seagate
Features:PowerChoice Technology, Low Halogen, RAID Rebuild, Low Power Consumption, Rotational Vibration Sensor
Assembled Product Dimensions (L x W x H):4.00 x 2.80 x 0.60 Inches