WD Green 2 TB Mobile Hard Drive: 2.5 Inch, SATA II, 8 MB Cache (WD20NPVT) (Old Model) Cooler and quieter - WD Green is simple high capacity storage that runs cooler and quieter than traditional 7200 RPM drives. Eco-conscious design - Manufactured lead free, halogen free and with conflict free materials These drives are 15mm high, and will NOT fit into laptops/notebooks 2TB capacity holds up to 400,000 digital photos, 500,000 MP3 files, and 240 hours of HD video. 2 year limited warranty.