Details

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• Capacity: 4TB
• Form Factor: 3.5-Inch
• Connector: SATA
• Interface: SATA III 6 Gb/s
• Transfer Rate: Up to 180MB/s
• Disk Speed (RPM): 5400 RPM
• Recording Technology: CMR
• Cache Size: 128MB
• Warranty: 3-Year Limited Warranty
• Dimensions (L x W x H): 5.78" × 4" × 1.03"
• Weight: 1.21 lbs
• Model Number: WD40EFZZ
• Operating Temperature: 0°C to 60°C
• Non‑Operating Temperature: -40°C to 70°C

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Product Features

• Tuned for NAS with NASware firmware
• Designed for 24/7 continuous operation
• RAID‑optimized for small & medium NAS systems
• Supports high workload rate (up to 180 TB/year)
• Enhanced vibration & noise reduction
• Lower power consumption for cooler operation