Western Digital Blue SN5000 4TB M.2 2280 Up to 5,500 MB/s NVMe PCIe Gen 4.0 Internal SSD

The Western Digital WDS400T4B0E-00BKY0 is a 4TB internal solid-state drive that drops straight into any system with an M.2 2280 slot and a PCIe Gen 4 interface. It delivers the kind of throughput that keeps large projects moving, with up to 5,500 MB/s sequential reads and up to 5,000 MB/s sequential writes. Whether you are loading massive game worlds, scrubbing through multi-layer 4K footage, training a local AI model, or managing a sprawling photo library, the drive stays responsive thanks to up to 690 K random read IOPS and 900 K random write IOPS.

Western Digital’s nCache 4.0 design reserves a portion of flash as high-speed cache, so write performance remains steady during sustained transfers and heavy multitasking. A 1,200 TBW endurance rating and a five-year limited warranty give you the confidence to use the full capacity day after day for scratch files, virtual machines, and frequent project revisions.

Installation is straightforward: slide the drive into the M.2 slot on a desktop motherboard, small-form-factor workstation, or performance laptop, secure it with a single screw, and you are ready to go. The included Acronis True Image software helps you migrate data from an existing drive, so you can upgrade without reinstalling your operating system or applications.

In creative studios, software development labs, and high-end gaming setups, the Blue SN5000 frees you from storage bottlenecks and lets the processor and graphics card work at full pace. If you need a single drive that offers both large capacity and sustained Gen 4 performance, this model fits the brief without complication.

• Up to 5,500 MB/s sequential read speed
• Up to 5,000 MB/s sequential write speed
• 690 K random read IOPS and 900 K random write IOPS
• 4TB capacity in an M.2 2280 form factor
• PCIe Gen 4 x4 NVMe interface
• nCache 4.0 architecture for sustained workloads
• 1,200 TBW endurance and five-year limited warranty
• Includes Acronis True Image software for data migration

• We offer free shipping in most of our items.
• Orders are processed within a maximum of 2 business days.
• Estimated delivery times are provided at checkout.
• Tracking information is emailed after your order ships.
• We ship to most countries worldwide.
• Customs duties and taxes are the customer's responsibility.

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• 30-day free returns from the date of receiving your item.
• Items must be unused, in original condition, with tags, and in original packaging.
• Returns without prior approval will not be accepted.
• Certain items, like opened electronics or consumables, are nonreturnable.
• Refunds are processed immediately after inspection.
• A 30% restocking fee may apply for damaged or incomplete returns.

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• Product warranties are provided solely by the manufacturer.
• Warranty claims must be handled directly with the manufacturer.
• We do not manage or administer warranty claims.
• Keep your proof of purchase and original packaging for warranty purposes.
• Warranty details, including coverage and duration, are determined by the manufacturer.
• We can assist with providing manufacturer contact information, but we cannot process claims on your behalf.

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