| Disk Capacity | 4000 GB |
| Disk Size | 3.5 “ |
| Disk Speed | 5400RPM |
| Drive Interface | SATA III |
| Data Buffer/RAM | 128 MB |
Performance
| Data Transfer Rates | Up to 175 MB/s |
| Mean Time Between Failure (MTBF) | 1,000,000 hours |
Electrical
| Power Requirement Spin Up (Max) | 4.8 W |
| Power Requirement Idle (Ready) | 3.1 W |
Environmental
| Operating Temperature | 0 ~ 65 °C |
| Non Operating Temperature | -40 ~ +70 °C |
| Shock (Operating) | 70 G |
| Shock (Non Operating) | 300 G |
| Acoustics (Seek Mode) | 27 dBA |
| Acoustics (Idle Mode) | 23 dBA |
Physical
| Form Factor | Hard Disk Drive |
| Enclosure type | Internal |
| In The Box | 1 x 4TB HDD |
| Width | 101.6 mm |
| Depth | 146.99 mm |
| Height | 26.11 mm |
| Weight | 0.57 kg |
Key Features
| Interface Type | SATA III |
| Cache Memory | 128 MB |
| Disk Form Factor | 3.5 |
| Interface Type | SATA III |
| Condition | New |
| HDD Purpose | NAS |
| Recording Technology | CMR |
| Power Requirement (auto) | 10 W |
| Number of SATA power required | 1 |
Storage
| HDD Type | HDD |
Item Details
| Manufacturer | Western Digital |
| Manufacturer Code | WD40EFZX |
| UPC | 718037884394 |
| Condition | New |


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