Western Digital Blue 4TB 2.5 inch SATA SSD

The Western Digital Blue 4TB 2.5 inch SATA SSD (model WDS400T2B0A, GTIN 718037868127) is a high-capacity internal solid state drive built into the standard 2.5-inch form factor used by most laptops and desktops. It connects over the SATA 6 Gb/s interface, making it a drop-in upgrade path for systems that originally shipped with a 2.5-inch hard drive or an older SATA SSD, without needing an M.2 slot or NVMe support. At 4TB of usable capacity, this drive is aimed at buyers who have outgrown 500GB or 1TB SSDs and want to consolidate large Steam libraries, photo and video archives, project files, or virtual machine images onto a single quieter, shock-resistant SSD instead of a mechanical hard disk. Western Digital rates sequential read performance at up to 560 MB/s, which is at the top end of what the SATA III bus can deliver - meaning shorter boot times, faster application launches, and quicker file copies than a 5400 or 7200 RPM hard drive. Verified specifications (from the supplier listing) - Brand: Western Digital - Series: WD Blue - Model / SKU: WDS400T2B0A - GTIN: 718037868127 - Form factor: 2.5 inch - Interface: SATA 6 Gb/s - Capacity: 4TB - Sequential read: up to 560 MB/s Best suited for users upgrading laptops, all-in-ones, mini PCs, or older desktops that still rely on a 2.5-inch bay, as well as buyers building secondary game or media drives for systems whose primary slot already holds an NVMe SSD. It is less ideal for workloads that specifically need NVMe-class sequential or random performance, since the SATA interface caps real-world throughput well below what a PCIe Gen3/Gen4 NVMe drive can sustain. Endurance, warranty period, and write speeds are not listed on the supplier sheet; refer to Western Digital's product page or datasheet for those figures before committing the drive to heavy write-intensive workloads