WD Hard Disk Surveillance Purple 4TB
Type: Internal Hard Disk Drive (HDD)
- Brand: Western Digital (WD)
**Specification:**
- Capacity: 4TB
- Interface: SATA 6Gb/s
- Form Factor: 3.5-inch
- Rotation Speed: 5400 RPM or 7200 RPM
- Cache: Up to 256MB
- MTBF: 1 million hours