Mfr Part Number: WD121PURP Capacity: 12 TB Rotational Speed: 7200RPM Cache: 256 MB Interface: SATA 6Gb/s Recording Technology: CMR Data Transfer Rate (Max): Buffer to Host: 6 Gb/s Host to/from Drive (Sustained): 245 MB/s Shock: Operating: 30Gs @ 2ms (read/write); 65Gs @ 2ms (read) Non-operating: 250Gs @ 2ms Acoustics: Idle Mode: 20 dBA Seek Mode: 29 dBA (average) Power Management: Read/Write: 6.6 W Idle: 5.6 W Standby: 0.6 W Sleep: 0.6 W Form Factor: 3.5 inch Dimensions (WxLxH): 101.6 x 147.0 x 26.1 mm Weight: 0.66 kg RoHS Compliant