








๐ด Power Your NAS with WD Red: Reliable Storage That Never Sleeps
The WD Red 4TB NAS Internal Hard Drive (WD40EFAX) is purpose-built for small and home office NAS systems, offering 4TB of reliable storage with a 5400 RPM spindle speed optimized for 24/7 operation. It supports up to 180 TB/year workload, backed by NASware firmware for enhanced compatibility and durability, making it the go-to choice for professionals seeking dependable, always-on network storage.







| Brand | Western Digital |
| Product Dimensions | 2.62 x 14.71 x 10.16 cm; 560 g |
| Item model number | WD40EFAX |
| Manufacturer | Western Digital |
| Series | DISQUE DUR WD RED 4TO 64MO CACHE SATAIII *WD40EFAX* (NAS STORAGE) 1036 |
| Colour | Red |
| Form Factor | 2.5 in3.5 in |
| Standing screen display size | 24 Inches |
| Hard Drive Size | 4 TB |
| Hard Disk Description | Mechanical Hard Disk |
| Hard Drive Interface | eSATA |
| Hard Disk Rotational Speed | 5400 RPM |
| Wattage | 4.8 watts |
| Hardware Platform | Mac, PC |
| Are Batteries Included | No |
| Lithium Battery Energy Content | 2 Kilowatt Hours |
| Lithium Battery Packaging | Batteries packed with equipment |
| Lithium Battery Weight | 2 Grams |
| Number Of Lithium Ion Cells | 5 |
| Number of Lithium Metal Cells | 5 |
| Item Weight | 560 g |
| Guaranteed software updates until | unknown |
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