Western Digital WD Red WD40EFRX 4 TB SATA HDD

Your files. One place to bring them together.

The Western Digital WD Red WD40EFRX puts 4 TB at the heart of your storage setup. Create a central home for photos, shared files and backups with storage designed for your NAS.

From scattered folders to a personal library

Bring family photographs, media collections and everyday documents into a shared NAS library. Keep the files you return to close at hand, while giving your backup routines dedicated space alongside your growing collection.

At home in network storage

This NAS-focused series is intended for shared storage rather than a single user’s file collection alone. It suits a home or small-office setup where several people want to work with a central set of files through their NAS.

What defines this model

WD40EFRX: SATA 6 Gb/s · 3.5-inch · 5400 RPM Class · 64 MB cache.

Illustrative product or series image. The specifications on this page refer to the stated model.