WD Red 4TB NAS Hard Drive – Model WD40EFRX – 3.5″ SATA 6Gb/s 5400RPM 64MB Cache

WD Red 4TB NAS Hard Drive – Model WD40EFRX – 3.5″ SATA 6Gb/s 5400RPM 64MB Cache

Condition

Used – fully tested and in excellent working order .

Description

The Western Digital Red 4TB (WD40EFRX) drive is purpose-built for 24/7 NAS environments .
With NASware™ 3.0 firmware, it ensures reliable performance, low power consumption and vibration protection—ideal for home or small-business NAS, media servers or backup storage.

Specifications

• Capacity: 4 TB

• Form Factor: 3.5-inch

• Interface: SATA 6 Gb/s

• Speed: 5400 RPM (IntelliPower)

• Cache: 64 MB

• Optimised for: NAS systems with 1–8 bays

• Workload Rate: Up to 180 TB/year

• MTBF: 1 million hours

Package Includes

• WD Red 4 TB WD40EFRX Hard Drive (bare drive only)

Shipping

• Ships within 1 business day