WD Red 4TB NAS Internal Hard Disk 5400 RPM WD40EFZX

The 4TB WD WD40EFZX Red Plus NAS hard drive is designed and tested for compatibility in the unique 24×7 operating environment and demanding system requirements of home and small office Network Attached Storage (NAS). Built-in NASware optimises power use resulting in significant power savings and lower hard drive operating temperatures. This improves the overall reliability and performance of the drive and reduces the NAS cost of ownershi