Professionally Refurbished. Features: Cool operating temperature means longer service life and greater reliability. These drives are designed for cool running, even in severe operating environments. Whisper quiet - With its WhisperDrive and SoftSeek technologies. Technical Specifications: Capacity: 400GB, Model: WD4000KD, Form Factor: 3.5", Cache: 16MB, Spindle: 7200 RPM, Interface: SATA 1.5Gb/s, Rotation Time: 8.33 ms, Average Latency: 4.17 ms, Average Seek Time: 8.9 ms, Track To Track Seek Time: 2 ms, Full Stroke Seek Time: 21 ms, Drive Dimensions: 25.4mm x 101.6mm x 147mm, Drive Height: 25.4mm.

• Capacity: 400GB, Series Caviar: SE16
• Interface Type: SATA 1.5Gb/s, Form Factor: 3.5"
• Buffer Memory: 16MB, Spindle Speed: 7200 RPM
• Average Latency: 4.17 ms, Average Seek Time: 8.9 ms, Track To Track Seek Time: 2 ms, Full Stroke Seek Time: 21 ms
• Drive Dimensions: 25.4mm x 101.6mm x 147mm, Drive Height: 25.4mm

Capacity: 400GB, Series Caviar: SE16ITRenew Western Digital