Samsung 256GB PRO Plus UHS-I microSDXC Memory Card

Samsung makes the NAND flash inside most of the world's memory cards. The Samsung 256GB PRO Plus UHS-I microSDXC Memory Card puts that manufacturing advantage directly into a card that Samsung brands and warrants itself. At 180MB/s sequential read and 130MB/s write, it handles 4K UHD video recording without frame drops, rapid JPEG burst sequences without camera buffer stalls, and fast file transfers to a laptop via the included SD adapter. The A2 application performance rating ensures mobile apps stored on the card launch and run smoothly rather than stuttering. Six-layer protection covers seawater immersion, temperatures from -25°C to 85°C, airport X-ray exposure, strong magnetic fields, drops from 5 metres and 10,000 insertion cycles. The 10-year limited warranty is among the longest in the microSD category. All firmware and components are produced in-house by Samsung — no third-party NAND inside a Samsung label. 180/130 MB/s 4K Video · Burst Shooting · Fast Transfer 180MB/s sequential read handles transferring large 4K video files to a laptop quickly — a 10GB video file moves in under a minute. 130MB/s write keeps pace with 4K recording at up to 60fps and sustained high-resolution burst shooting without the camera's internal buffer filling up and forcing a pause. V30 (Video Speed Class 30) guarantees a sustained minimum write speed of 30MB/s, the threshold required for reliable 4K UHD video capture on compatible devices. U3 (UHS Speed Class 3) confirms the same minimum write speed for devices that reference the UHS speed class system. Both ratings are guaranteed minimums — the PRO Plus consistently delivers its rated speeds under real-world conditions. A2 Performance 4,000 Read IOPS · 2,000 Write IOPS A2 (Application Performance Class 2) is the SD Association's rating for cards capable of running apps smoothly when used as phone storage. It requires 4,000 random read IOPS and 2,000 random write IOPS — the type of small-file random access that apps perform constantly during operation. Without A2 performance, apps stored on a microSD card lag noticeably compared to internal storage. The PRO Plus's A2 rating means it can store and run apps, games and media without the sluggishness that affects budget cards. For Android devices that support adoptable storage or app installation to microSD, the A2 rating is the essential threshold. 6-Proof · 10-Year Warranty Built to Survive — Backed for a Decade Samsung's six-layer protection covers: waterproof (up to 72 hours in seawater), temperature-proof (-25°C to 85°C operating), X-ray proof (up to 100mGy — equivalent to airport security), magnet-proof (up to 15,000 gauss — stronger than an MRI), drop-proof (up to 5 metres) and wearout-proof (up to 10,000 insertion cycles). These are verified performance thresholds, not marketing claims. The 10-year limited warranty is direct from Samsung — if the card fails under normal use within a decade, Samsung replaces it. Note: the six-proof protection applies to the card itself; the included SD adapter is not covered by the same certification. Great choice if you… ✔ Record 4K video on a smartphone, action camera or drone ✔ Shoot high-resolution photo bursts and need fast write speed ✔ Store and run apps on microSD (A2 performance required) ✔ Need 256GB storage with serious durability assurance ✔ Use GoPro, DJI drone, Samsung Galaxy or any A2/U3/V30 device Consider something else if… ✖ You need 8K video or UHS-II speeds — see Samsung PRO Ultimate ✖ You need 512GB or 128GB — see other capacities in the Samsung PRO Plus range ✖ You need extended endurance for dash cams — see Samsung PRO Endurance Technical Specifications Brand / Model Samsung PRO Plus microSDXC Capacity 256GB Read Speed Up to 180MB/s Write Speed Up to 130MB/s Speed Class UHS-I · U3 · V30 · A2 · Class 10 Video 4K UHD · Full HD Protection Water · Temperature · X-ray · Magnet · Drop · Wearout Dimensions 15 × 11 × 1mm · 0.3g Colour Blue Warranty 10 Years (Samsung) Box Contents —Samsung PRO Plus 256GB microSDXC card —SD adapter (full-size) Compatible With —Android smartphones and tablets (microSD slot) —GoPro action cameras (Hero series) —DJI drones and gimbals —Dash cams · body cams · security cameras —Nintendo Switch —Cameras and laptops with SD slot (via adapter) Condition Brand New — Retail Packaging Warranty 10 Years Samsung Delivery 4–5 Working Days · Fully Tracked Browse the full microSD card range at maibo, including SanDisk Extreme PRO and Lexar Professional series.