Western Digital Blue SN5100 4TB M.2 NVMe Gen4 SSD

The Western Digital Blue SN5100 4TB is a high-capacity M.2 NVMe solid-state drive built on the PCIe Gen 4 interface, making it a compelling upgrade for users who need substantial internal storage in a compact form factor. Designed to fit the widely adopted M.2 slot found in modern laptops, desktops, and mini-PCs, it slots in without the cable clutter associated with 2.5-inch drives, keeping builds clean and airflow unobstructed. The Blue SN5100 sits within Western Digital's mainstream Blue lineup, positioning it as an everyday performance drive suitable for general productivity, content creation workflows, and large media libraries. The PCIe Gen 4 interface delivers a meaningful bandwidth advantage over the previous Gen 3 standard, enabling faster boot times, quicker application launches, and snappier file transfers when the host system's M.2 slot supports Gen 4 operation. The drive remains backward-compatible with Gen 3 hosts. At 4TB, this variant offers substantial room for operating systems, software suites, game libraries, video projects, and personal archives — reducing the need for additional external storage. The M.2 2280 form factor (standard length) ensures broad motherboard and laptop compatibility across the market. For buyers comparing NVMe options within the Western Digital family, the Blue SN5100 occupies a value-oriented Gen 4 position below the performance-focused Black SN7100, making it a practical choice for users who prioritise capacity and everyday speed over peak sequential throughput. Verifiable Specifications: • SKU: WDS400T5B0E-00CPE0 • GTIN / EAN-UPC: 718037906270 • Brand: Western Digital • Product Line: WD Blue SN5100 • Capacity: 4TB • Interface: NVMe (PCIe Gen 4) • Form Factor: M.2 • Storage Type: SSD (Solid-State Drive) • Condition: New