{"product_id":"western-digital-cuk-wd-sn520-256gb-m-2-2242-nvme-ssd-compact","title":"Western Digital CUK WD SN520 256GB M.2 2242 NVMe SSD - Compact","description":"\u003cp\u003eIn this review the Western Digital CUK WD SN520 256GB M.2 2242 NVMe SSD is examined for mainstream laptops, mini PCs and small form-factor upgrades. The bottom line: it delivers a clear performance uplift over SATA drives with up to \u003cstrong\u003e1,700 MB\/s read\u003c\/strong\u003e and \u003cstrong\u003e1,300 MB\/s write\u003c\/strong\u003e speeds in a compact M.2 2242 package, making it a sensible choice when space and budget matter. Our review focuses on real-world value, compatibility and who benefits most from this OEM bulk tray offering.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e256GB capacity:\u003c\/strong\u003e Provides ample storage for the OS, essential apps and a library of documents or light media without overpaying for unused space.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePCIe Gen3 x4 NVMe interface:\u003c\/strong\u003e Delivers substantially faster boot and application load times compared with SATA SSDs for everyday computing tasks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM.2 2242 form factor:\u003c\/strong\u003e Fits compact laptops and small motherboards that require a shorter 42mm module, enabling upgrades where longer drives will not fit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax sequential performance:\u003c\/strong\u003e Rated up to 1,700 MB\/s read and 1,300 MB\/s write, which accelerates file transfers and reduces wait time for large sequential workloads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eB+M key design:\u003c\/strong\u003e Broad compatibility with systems that accept B or M keyed sockets, simplifying installation in many devices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCUK 1 year hardware warranty:\u003c\/strong\u003e Offers basic warranty coverage for peace of mind in an OEM tray product aimed at builders and technicians.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis drive is well suited to users upgrading older ultrabooks, compact desktops and embedded systems that need a genuine speed boost over SATA without requiring large capacity. Technicians and system builders who assemble machines with limited internal space will appreciate the M.2 2242 size and the bulk OEM tray packaging.\u003c\/p\u003e\n\u003cp\u003eIt is not aimed at users who need very high capacities or extreme sustained write performance for heavy content creation or large database workloads; those buyers should consider higher-capacity NVMe models or drives with enterprise endurance ratings.\u003c\/p\u003e\n\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNoticeable speed improvement over SATA drives for boot and app loading in everyday use.\u003c\/li\u003e\n\u003cli\u003eCompact M.2 2242 form factor fits systems with restricted module length.\u003c\/li\u003e\n\u003cli\u003eGood sequential read\/write specs for the capacity class, helping file transfer times.\u003c\/li\u003e\n\u003cli\u003eReasonable OEM pricing and simple warranty support for installations and repair work.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e256GB may fill quickly for users with large media libraries or many games, requiring additional storage planning.\u003c\/li\u003e\n\u003cli\u003eOne year hardware warranty is shorter than some retail consumer SSD warranties, which may concern longer-term buyers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer Part Number\u003c\/td\u003e\n\u003ctd\u003eSDAPMUW-256G\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity\u003c\/td\u003e\n\u003ctd\u003e256GB formatted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003ePCIe Gen3 x4 NVMe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForm Factor\u003c\/td\u003e\n\u003ctd\u003eM.2 2242 (B+M key)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Sequential Read\u003c\/td\u003e\n\u003ctd\u003e1,700 MB\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Sequential Write\u003c\/td\u003e\n\u003ctd\u003e1,300 MB\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eCUK 1 year hardware warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Western Digital CUK WD SN520 256GB is a practical, value-oriented NVMe upgrade for compact systems and everyday users who want faster boot times and application responsiveness without spending on larger capacity drives. It represents solid value where space constraints matter, though buyers needing long-term endurance or much larger storage should evaluate higher-tier options.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this fit my laptop?\u003c\/strong\u003e\u003cbr\u003eIt will fit laptops and motherboards that accept an M.2 2242 module with B or M key; check your device spec for supported module length.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this drive significantly faster than SATA SSDs?\u003c\/strong\u003e\u003cbr\u003eYes, the PCIe Gen3 x4 NVMe interface yields noticeably faster sequential and random access than typical SATA SSDs for everyday tasks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it include management software?\u003c\/strong\u003e\u003cbr\u003eThis is a bulk OEM tray product and does not include retail packaging or bundled consumer software; installation and OS cloning tools are handled separately by the user.\u003c\/p\u003e","brand":"Western Digital","offers":[{"title":"Default Title","offer_id":48203331600603,"sku":"B09P48KQ8T","price":89.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51PzaAvxAFL._AC_SL1280.jpg?v=1770272931","url":"https:\/\/gearmusthave.com\/products\/western-digital-cuk-wd-sn520-256gb-m-2-2242-nvme-ssd-compact","provider":"GearMustHave","version":"1.0","type":"link"}