Brand: Western Digital · SKU: WD40EFPX · MPN: WD40EFPX · Category: Components

The wd40efpx NAS HDD delivers dependable 4TB storage designed for continuous NAS operation and multi-user workloads. Built with WD Red technology, it ensures smooth data access, stable performance, and long-term reliability for business environments. Ideal for IT teams needing consistent storage capacity to support backups, shared files, and daily operations without interruptions.
| Brand | Western Digital |
|---|---|
| Special Feature | Portable |
| Compatible Devices | NAS System |
| Hard Disk Interface | Serial ATA-600 |
| Hard Disk Description | Mechanical Hard Disk |
| Hard Disk Form Factor | 3.5 Inches |
| Connectivity Technology | SATA |
| Digital Storage Capacity | 4 TB |
| Warranty | 3 years |
| Weight | 0.65 kg |
| Dimensions | 14 � 10 � 2.6 cm |
Western Digital WD40EFPX 4TB 3.5" WD Red NAS Drive is engineered for round-the-clock NAS performance, offering durability and efficiency for demanding business environments. The wd40efpx NAS HDD supports 6Gbps SATA connectivity, ensuring fast data transfers and stable throughput across multi-drive NAS setups. Its optimized firmware enhances RAID compatibility, reduces vibration, and maintains consistent performance under heavy workloads. Designed for storage expansion, shared file systems, and data backup infrastructures, it meets the requirements of growing networks and small-to-mid-size businesses. Many professionals choose trusted platforms such as Server Tech Central when looking for reliable WD Red drives to strengthen their storage architecture and operational resilience.
Yes, this Western Digital WD40EFPX 4TB 3.5" LFF 6Gbps WD Red NAS Drive (WD40EFPX) is 100% genuine Western Digital hardware. All our products are verified by certified technicians and come with clean serial numbers ready for service contract registration.
This Western Digital WD40EFPX 4TB 3.5" LFF 6Gbps WD Red NAS Drive includes our standard 3-Year Warranty covering all manufacturing defects. We also offer advanced replacement options for minimal downtime.
We offer free ground shipping which typically takes 3-5 business days. Expedited shipping options are available at checkout for faster delivery.
Yes, we have a 30-day return policy on all products. Restocking fees may apply for opened items. Please see our return policy for complete details.
Please check the specifications tab for detailed compatibility information. Our technical team is available to assist with compatibility questions for the WD40EFPX.