Compatibility: Unlike desktop drives, these drives are specifically tested for compatibility with NAS systems for optimum performance.
Error Recovery Controls: WD Red Plus NAS hard drives are specifically designed with RAID error recovery control to help reduce failures within the NAS system.
Noise and Vibration Protection: Designed to operate solo, desktop drives typically offer little or no protection from the noise and vibration present in a multi-drive system. WD Red Plus drives are designed to thrive in multi-bay NAS system environments.

Technical Details

Brand	‎Western Digital
Series	‎WD Red Plus
Colour	‎Red
Form Factor	‎3.5-inch
Item Height	‎1.03 Inches
Item Width	‎4 Inches
Product Dimensions	‎14.71 x 10.16 x 2.61 cm; 570 g
Item model number	‎WD40EFPX
Hard Drive Size	‎4 TB
Hard Disk Description	‎Mechanical Hard Disk
Hard Drive Interface	‎SATA 6 GB/s
Hard Disk Rotational Speed	‎5400 RPM
Voltage	‎1 Volts
Are Batteries Included	‎No
Lithium Battery Weight	‎0.19 Grams
Number of Lithium Ion Cells	‎1
Number of Lithium Metal Cells	‎1
Country of Origin	‎China