WD 4TB Surveillance Sata Hard Disk

4 TB 3 TB 2 TB 2 TB 1.5 TB 1.5 TB 1 TB 500 GB Model number1 WD60EZRX WD50EZRX WD40EZRX WD30EZRX WD20EZRX WD20NPVX WD15EZRX WD15NPVX WD10EZRX WD5000AZRX Interface (SATA) 6 Gb/s 6 Gb/s 6 Gb/s 6 Gb/s 6 Gb/s 6 Gb/s 6 Gb/s 6 Gb/s 6 Gb/s 6 Gb/s Formatted capacity2 6 TB 5 TB 4 TB 3 TB 2 TB 2 TB 1.5 TB 1.5 TB 1 TB 500 GB Form factor 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch 2.5-inch 3.5-inch 2.5-inch 3.5-inch 3.5-inch Advanced Format (AF) Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes RoHS compliant3 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Performance Data transfer rate (max) Buffer to host Host to/from drive (sustained) 6 Gb/s 175 MB/s 6 Gb/s 170 MB/s 6 Gb/s 150 MB/s 6 Gb/s 147 MB/s 6 Gb/s 147 MB/s 6 Gb/s 135 MB/s 6 Gb/s 147 MB/s 6 Gb/s 135 MB/s 6 Gb/s 150 MB/s 6 Gb/s 150 MB/s Cache (MB) 64 64 64 64 64 8 64 8 64 64 Rotational speed (RPM)4 IntelliPower IntelliPower IntelliPower IntelliPower IntelliPower IntelliPower IntelliPower IntelliPower IntelliPower IntelliPower Reliability/Data Integrity Load/unload cycles5 300,000 300,000 300,000 300,000 300,000 600,000 300,000 600,000 300,000 300,000 Non-recoverable read errors per bits read <1 in 1014 <1 in 1014 <1 in 1014 <1 in 1014 <1 in 1014 <1 in 1014 <1 in 1014 <1 in 1014 <1 in 1014 <1 in 1014 Limited warranty (years)6 2 2 2 2 2 2 2 2 2 2 Power Management 12VDC ±10% (A, peak) 1.75 1.75 1.75 1.73 1.73 1.00 1.73 1.00 1.2 1.2 Average power requirements (W) Read/Write Idle Standby/Sleep 5.3 3.4 0.4 5.3 3.4 0.4 5.3 3.4 0.4 4.1 3.0 0.4 4.1 3.0 0.4 1.7 0.8 0.2 4.1 3.0 0.4 1.7 0.8 0.2 3.3 2.5 0.4 3.3 2.5 0.4 Environmental Specifications7 Temperature (°C)8 Operating Non-operating 0 to 60 -40 to 70 0 to 60 -40 to 70 0 to 60 -40 to 70 0 to 60 -40 to 70 0 to 60 -40 to 70 0 to 60 -40 to 65 0 to 60 -40 to 70 0 to 60 -40 to 65 0 to 60 -40 to 70 0 to 60 -40 to 70 Shock (Gs) Operating (2 ms, read) Operating (2 ms, read/write) Non-operating (1 ms) 30 65 250 30 65 250 30 65 250 30 65 250 30 65 250 300 - 650 30 65 250

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• Brand : Western Digital
• Manufacturer : Western Digital
• Colour : GREEN
• Item Height : 2.61 Centimeters
• Item Width : 10.16 Centimeters
• Standing screen display size : 3.5 Inches
• Product Dimensions : 14.71 x 10.16 x 2.61 cm; 680 Grams
• Item model number : WD40EZRX
• Hard Drive Size : 4TB
• Wattage : 4watt
• Are Batteries Included : no
• Item Weight : 680g.