| Manufacturer | Western Digital |
| Part Number | WD40EFRX |
| Drive Capacity | 4TB |
| Endurance | Load/unload Cycles: 600,000 Workload Rate: 180 TB per year |
| Performance | Interface Transfer Rate: 150 MB/s 64MB Cache 5400 RPM |
| Type | 3.5" Form Factor |
| Interface | SATA3 6.0Gb/s |
| Dimensions | 101.6 x 147 x 26.1mm 4" x 5.8" x 1" (in inches) |
| Life Expectancy | MTTF: 1,000,000 Hours Non-recoverable Read Errors: < 1 sector per 1014 bits read |
| Environmental | Operating Temperature: 0°C to 60°C (32°F to 140°F) Non-Operating Temperature: -40°C to 70°C (-40°F to 158°F) |
| Warranty | 3-Year Manufacturer's Limited Warranty |