Western Digital WDS400T4X0E-00CJA0

Overview

The Western Digital WDS400T4X0E-00CJA0 is a high-capacity 4TB M.2 2280 solid state drive designed for users who demand fast and reliable storage. It connects via a PCIe Gen 4.0 NVMe interface, delivering up to 7000 MB/s sequential read and 6700 MB/s sequential write speeds. This SSD is well suited for gamers, content creators, and professionals working with large files or data-intensive applications, providing quick load times and efficient data handling.

Key features

• PCIe Gen 4.0 NVMe interface offers high bandwidth for faster data transfers and reduced bottlenecks.
• Large 4TB capacity accommodates extensive game libraries, 4K video projects, and complex datasets.
• DRAM-less architecture reduces power consumption, helping laptops and handheld devices run cooler and extend battery life.
• High endurance rating of 2,400 TBW supports heavy daily workloads such as recording, editing, and software development.
• Up to 900K random read and 1350K random write IOPS improve responsiveness for multitasking and quick access to files.
• Five-year limited warranty provides long-term peace of mind for demanding users.

Key specs

• Capacity: 4TB
• Form factor: M.2 2280
• Interface: PCIe Gen 4.0 NVMe
• Sequential read speed: up to 7000 MB/s
• Sequential write speed: up to 6700 MB/s
• Random read IOPS: up to 900,000
• Random write IOPS: up to 1,350,000
• Endurance: 2,400 TBW
• Warranty: five-year limited

Connectivity and compatibility

This SSD fits into any system with an M.2 2280 slot that supports PCIe Gen 4.0, making it compatible with the latest motherboards and laptops designed for high-speed storage. Its NVMe protocol ensures efficient communication with the host system, maximizing performance for demanding applications.

Performance and reliability

With its TLC 3D NAND technology and high endurance rating, this drive maintains consistent performance even under heavy workloads. The DRAM-less design not only lowers power consumption but also contributes to thermal efficiency, which is especially beneficial for portable devices. This combination ensures the drive remains responsive and durable over time.

Ideal uses and environments

This SSD is a strong choice for PC gamers looking to reduce level load times and store large game libraries. Content creators working with 4K video, high-resolution images, or complex audio projects will find the fast read and write speeds ideal for smooth editing workflows. Developers and researchers benefit from quick data transfers and build times, making it suitable for professional and creative environments that require reliable, high-speed storage.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, with tags, manuals, accessories, and original, unaltered packaging. Any item kept will be deducted from the refund. Start a return by sending us an email. Items sent back without approval may be refused or returned to the sender.

Some items are not returnable: opened TVs/combos/monitors 37″+, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method; allow 5–7 business days for the credit to post. Shipping, handling, customs duties, and import taxes are nonrefundable. If an item is used, incomplete, or not in original condition, a 30% restocking fee may apply. Direct exchanges are not offered; purchase the replacement and return the original for a refund.

We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

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