Capacity:6 TBInterface:Serial ATA/600Spindle speed:5400 RPM IntelliPowerSize format:3.5 "Cache memory:64 MBTechnology:NCQ - Native Command QueuingAllframe - Reducing video frame "loss" phenomenonSupport TLER / ATA streamingIntelliPower - disks dedicated to HD video recording in 24/7 continuous mode and reduced energy consumptionDesigned to continuous operation 24/7: Weight:0.56 kgManufacturer / Brand:Western Digital