--- product_id: 493355095 title: "Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5\" -WD40EFPX" brand: "wd" price: "$335.79" currency: USD in_stock: true reviews_count: 7 category: "Wd" url: https://www.desertcart.us/products/493355095-western-digital-4tb-wd-red-plus-nas-internal-hard-drive store_origin: US region: United States of America --- # SATA 6 Gb/s blazing interface 4TB massive storage 5400 RPM optimized spin speed Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" -WD40EFPX **Brand:** wd **Price:** $335.79 **Availability:** ✅ In Stock ## Summary > 💼 Elevate your NAS game with WD Red Plus — storage that works as hard as you do! ## Quick Answers - **What is this?** Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" -WD40EFPX by wd - **How much does it cost?** $335.79 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/493355095-western-digital-4tb-wd-red-plus-nas-internal-hard-drive) ## Best For - wd enthusiasts ## Why This Product - Trusted wd brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Robust 256 MB Cache:** Boosts performance by minimizing wait times during heavy workloads. - • **Massive 4TB Capacity:** Store your entire digital empire with ease. - • **Efficient 5400 RPM Spin:** Balanced speed and power efficiency for 24/7 reliability. - • **Seamless NAS Compatibility:** Engineered with NASware firmware for flawless multi-bay setups. - • **High-Speed SATA 6 Gb/s Interface:** Experience rapid data transfers that keep your workflow smooth. ## Overview The Western Digital 4TB WD Red Plus NAS Internal Hard Drive (WD40EFPX) is a 3.5-inch SATA 6 Gb/s mechanical HDD designed specifically for NAS systems. Featuring a 5400 RPM spin speed, 256 MB cache, and NASware firmware, it supports up to 8-bay configurations and an annual workload rate of 180 TB, making it ideal for professional-grade, reliable, and efficient data storage in multi-drive environments. ## Description Western Digital WD40EFPX / 4TB / Red Plus Review: Not working - The drive is not working, and I am unable to initialize the disk. I bought two 4TB WD Red Plus NAS Hard Drives, neither of which is working. I bought them from desertcart UAE, and they came from desertcart UK. I cannot contact the seller! Review: Faulty desk - Noise comes out of the desk. This is very risky to loose the full data ## Features - Available in capacities ranging from 1-14TB with support for up to 8 bays - Supports up to 180 TB/yr workload rate | Workload Rate is defined as the amount of user data transferred to or from the hard drive. Workload Rate is annualized (TB transferred (8760 / recorded power-on hours)). Workload Rate will vary depending on your hardware and software components and configurations. - NASware firmware for compatibility ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BDXSK2K7 | | Additional Features | Portable | | Best Sellers Rank | #6,974 in Computers ( See Top 100 in Computers ) #17 in Internal Hard Drives | | Brand | WD | | Built-In Media | Internal Hard Drive | | Cache Memory Installed Size | 4 | | Color | Red | | Compatible Devices | NAS System | | Connectivity Technology | SATA | | Customer Reviews | 4.4 4.4 out of 5 stars (1,998) | | Digital Storage Capacity | 4 TB | | EU Spare Part Availability Duration | 3 Years | | Enclosure Material | Information Not Available | | Form Factor | 3.5-inch | | Global Trade Identification Number | 00718037899794 | | Hard Disk Description | Mechanical Hard Disk | | Hard Disk Form Factor | 3.5 Inches | | Hard Disk Interface | Serial ATA-600 | | Hard Disk Rotational Speed | 5400 RPM | | Hard-Drive Size | 4 TB | | Hardware Connectivity | SATA 6.0 Gb/s | | Hardware Platform | x86_64 | | Installation Type | Internal Hard Drive | | Item Dimensions L x W x Thickness | 14.7L x 10.2W x 2.6Th centimeters | | Item Type Name | Internal Hard Drive | | Item Weight | 0.68 Kilograms | | Manufacturer | Western Digital | | Media Speed | 100-150 MB/s | | Mfr Part Number | WD40EFPX | | Model Name | WD Red Plus | | Model Number | WD40EFPX | | Number of Items | 1 | | Read Speed | 150 Megabytes Per Second | | Specific Uses For Product | Business, NAS | | UPC | 718037899794 | | Unit Count | 1 Count | ## Product Details - **Brand:** WD - **Colour:** Red - **Compatible devices:** NAS System - **Connectivity technology:** SATA - **Digital storage capacity:** 4 TB - **Hard disk description:** Mechanical Hard Disk - **Hard disk form factor:** 3.5 Inches - **Hard disk interface:** Serial ATA-600 - **Installation type:** Internal Hard Drive - **Special features:** Portable ## Images ![Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" -WD40EFPX - Image 1](https://m.media-amazon.com/images/I/81wgF5tXOJL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Questions & Answers **Q: Is this WD Red drive backed by WD's 3-year limited warranty? I don't see it in the product description.** A: I had an issue with some of the WD Red drives I had purchased through Amazon... I had a failure and contacted WD for replacement under warranty... I was told that the drive I had only had a one year warranty period not the three year. The drive serial number started with WD and that indicated it was a drive from a single disk NAS.. those have only a one year warranty Where the other drives carry the 3 year. What is the difference in the drives i can not say or tell from looking at them and no other information was provided by WD. I was told I needed to go back to the seller and see if they would fix the issue. Since I've bought a number of drives over the last three years one at a time and registered them with WD, I didn't mark each drive and could not tell which drive came from what seller since the invoices didn't indicate the serial number of the drives.. I have 4 other drives in that situation. Since it was registered at the time I received the drive I know it was within the 3 years but after the 1 year warranty that WD would support. I had to buy a replacement.. Thing is that all the drive were in WD boxes and sealed in static bags. **Q: Can this drive be installed into an external HD case and used as a single drive media server or does it have to be installed in a NAS case?** A: It's designed for continuous use and not intended to be shut down and restarted on a routine basis. Those that say that they lack the performance of a desktop HD is just not true. they have similar performance characteristics with most 5200 RPM drives. One typically doesn't put a 4TB drive in a PC as a system drive. Usually, you would use a 1 TB drive that are typically 7200 RPM, which does provide better performance. If you really need that much space in your PC (system or otherwise) you're better off not using a NAS drive, something like the Seagate Barracuda. **Q: Why is this more expensive than an external wd 10 tb drive such as: https://www.amazon.com/s?k=wd+10tb+elements+desktop+usb+3.0+external+hard+drive&re** A: The retail storage market is more competitive. NAS and Enterprise drives meet 24/7/365 read write reliability benchmarks and typically have a 3-5 year warranty. Retail consumer drives may in some cases last as long as NAS drives, but typically will have a shorter warranty. Note that liberating a hard drive from a retail external enclosure (to use in a PC) would likely void the drives warranty altogether. **Q: Can this drive be used to replace the internal hard drive within the apple 3tb time capsule?** A: Depends if it uses a 2.5in or 3.5inch drive or not. Specs are probably fine but need to know what size of hard drive it takes. Based on the dimensions of the apple device, it might accommodate this. Based on the apple dimensions, I would be surprised if it uses 3.5in drives but it isn't impossible. ## Customer Reviews ### ⭐ Not working *by J***. on 27 April 2025* The drive is not working, and I am unable to initialize the disk. I bought two 4TB WD Red Plus NAS Hard Drives, neither of which is working. I bought them from Amazon UAE, and they came from Amazon UK. I cannot contact the seller! ### ⭐ Faulty desk *by A***H on 10 February 2024* Noise comes out of the desk. This is very risky to loose the full data ### ⭐⭐⭐⭐⭐ Review *by G***I on 3 September 2025* Good ## Frequently Bought Together - Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" -WD40EFPX - Synology 2-Bay DiskStation DS224+ (Diskless) - Seagate IronWolf 4TB NAS Internal Hard Drive CMR 3.5 Inch SATA 6Gb/s 5400 RPM 64MB Cache for RAID Network Attached Storage Rescue Services (ST4000VNZ06/006) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/493355095-western-digital-4tb-wd-red-plus-nas-internal-hard-drive](https://www.desertcart.us/products/493355095-western-digital-4tb-wd-red-plus-nas-internal-hard-drive) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-17*