Samsung PRO Endurance UHS-I microSDXC 256GB Memory Card with SD Adapter

The Samsung MB-MJ256KA/AM is a PRO Endurance microSDXC card that delivers 256GB of reliable storage for devices that record video without a break. It is built for security cameras, dash cams, body cams, and other systems where failure is not an option. An endurance rating of up to 140,160 hours means you can deploy it once and let it capture months of continuous footage before thinking about replacements.

Speed also matters when you need to review or archive clips. Read speeds that reach 100 MB/s let you scan hours of footage quickly, while write speeds up to 40 MB/s help the card keep up with Full HD and 4K streams. The V30 and U3 classifications confirm that frame drops are unlikely, even when scene complexity spikes.

True field work brings unpredictable conditions. The card’s design resists water, magnets, X-rays, drops, and temperatures from -13 °F to 185 °F, so it can sit inside a windshield-mounted camera through summer heat, survive a rain-soaked outdoor enclosure, or travel through airport scanners without losing data. A five-year limited warranty adds extra peace of mind.

Samsung includes an SD adapter, which makes the card easy to slot into laptops, DSLR or mirrorless cameras, and other full-sized SD devices when you need to transfer files or repurpose the media. Whether you are a fleet manager archiving dash-cam evidence, a homeowner monitoring a backyard, or a content creator looking for a dependable card for a high-resolution camera, this PRO Endurance model offers a simple, durable solution.

• 256GB capacity supports lengthy video archives without frequent card swaps
• Rated for up to 140,160 hours of continuous recording in compatible devices
• Read speeds up to 100 MB/s and write speeds up to 40 MB/s for quick access and steady capture
• V30 and U3 speed classes sustain smooth Full HD and 4K video recording
• Resists water, magnets, X-rays, drops, and extreme temperatures from -13 °F to 185 °F
• Includes SD adapter for use in laptops, cameras, and other full-sized SD slots
• Backed by a five-year limited warranty from Samsung