Western Digital HDD WD40EFRX 4TB SATA III 5400RPM 64MB 3.5inch WD Red Bulk

Interface
SATA 6Gb/s
Performance Specifications
Rotational Speed: IntelliPower
Buffer Size: 64MB
Transfer Rates
Buffer to Host (Serial ATA): 6Gb/s (Max)
Physical Specifications
Formatted Capacity: 4,000,787 MB
Capacity: 4TB
User Sectors Per Drive: 7,814,037,168
Target Performances
MTBF: 1,000,000 Hours
Environmental Specifications (Shock)
Operating Shock (Read): 65G, 2ms
Non-Operating Shock: 250G, 2ms
Environmental Specifications (Acoustics)
Idle Mode: 25 dBA (Average)
Seek Mode: 28dBA (Average)
Temperature
Operating: 32 F to 158 F (-0 C to 70C)
Non-Operating: -40 F to 158 F (-40 C to 70 C)
Humidity
Operating: 5-95% RH Non-Condensing
Vibration
Operating: 0.004 g/Hz (10 to 300 Hz)
Non-Operating: 0.05 g/Hz (10 to 300 Hz)
Operating
Linear: 20-300 Hz, 0.75G (0 to peak)
Electrical Specifications (Current Requirements)
12V DC:
- Read/Write: 250mA / Idle: 230mA / Standby: 7mA / Sleep: 7mA
5V DC:
- Read/Write: 280mA / Idle: 260mA / Standby: 105mA / Sleep: 105mA
Power Dissipation:
- Read/Write: 4.50 Watts
Idle: 3.30 Watts
Standby: 0.40 Watts
Sleep: 0.40 Watts
Compatibility
Operating System: Windows/Mac
Item Dimension (L"xW"xH")
5.78 x 4 x 1.03
Weight
0.97 lb
Warranty Information
3 Years