Western Digital 500 GB WD Black SATA III 7200 RPM 32 MB Cache Bulk/OEM Desktop Hard Drive Ships in Certified Frustration-Free Packaging Standby: 0.9 W, Sleep: 0.9 W Interface: SATA 6 Gbps, Average latency (ms): 4.2ms Capacity: 500 GB, Rotational Speed: 7200 RPM, Cache: 32 MB Power Dissipation(Average),:Read/Write: 6.0 W, Idle: 5.6 W Capacity: 500 GB, Rotational Speed: 7200 RPM, Cache: 32 MB Interface: SATA 6 Gbps, Average latency (ms): 4.2ms Power Dissipation(Average),:Read/Write: 6.0 W, Idle: 5.6 W Standby: 0.9 W, Sleep: 0.9 W