WD  Bare Drives 2TB WD Green SATA III Intellipower 8 MB Cache Bulk/OEM Hard Drive WD20NPVX 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