Samsung PRO Endurance 256GB microSDXC Memory Card with Adapter
Bottom line: The Samsung PRO Endurance 256GB microSDXC Memory Card with Adapter ($149.97 on Amazon as of 2026-10-21 08:15 UTC): Rated for up to 140,160 hours of recording at 256GB - over 16 years; main trade-off: 40MB/s write is slow for burst photography or fast card-to-PC transfers.
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*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Rated for up to 140,160 hours of recording at 256GB - over 16 years
- ✓ Up to 100MB/s read and 40MB/s write handles FHD and 4K capture
- ✓ Operating range of -25C to 85C suits cars and outdoor enclosures
- ✓ Warranty up to 5 years plus a full-size SD adapter in the box
Cons
- ✗ 40MB/s write is slow for burst photography or fast card-to-PC transfers
- ✗ V10 speed class only - some 4K camcorders specify V30
- ✗ Endurance rating drops with capacity: 128GB is rated half as long
- ✗ Not compatible with Nintendo Switch 2, only the original Switch
Manufacturer description
Samsung's PRO Endurance 256GB microSDXC card is purpose-built for devices that write video continuously, and the spec sheet backs that up: this capacity is rated for up to 140,160 hours of recording and rewriting, which works out to more than 16 years of continuous capture. That endurance figure is what separates it from a standard microSD card, and it is why the PRO Endurance line targets dash cams, body cams, and home security cameras rather than general file storage. Speeds are rated at up to 100MB/s read and 40MB/s write, enough headroom for both FHD and 4K recording, with Class 10, U1…
SpecPicks Verdict
SpecPicks scored Samsung PRO Endurance 256GB microSDXC Memory Card with Adapter using a rating × review-volume × price-fit model applied to published specs and reviews across the PC & gaming hardware category. Samsung's PC & gaming hardware lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for PC & gaming hardware of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
How long will this card last in a dash cam?
Samsung rates the 256GB PRO Endurance for up to 140,160 hours of recording and rewriting - more than 16 years of continuous capture. Lower capacities are rated proportionally lower: 128GB up to 70,080 hours, 64GB up to 35,040 hours.
Is it fast enough to record 4K?
Yes. Samsung rates it at up to 100MB/s read and 40MB/s write with Class 10, U1, and V10 ratings, and lists both FHD and 4K recording and playback support.
Does it work with the Nintendo Switch?
Samsung lists it as compatible with the original Nintendo Switch, but explicitly not with the Nintendo Switch 2.
Will it survive being left in a car year-round?
Its rated operating temperature range is -25C to 85C, and Samsung states it is tested against magnets, X-rays, water, drops, and wearout.
Do I get the full 256GB, and is an adapter included?
A full-size SD adapter is included. Samsung notes that actual usable capacity is measured with the SD Formatter 3.1 tool using exFAT and may be less than the labeled 256GB.
Key Features
- Compatible with Nintendo-Switch (NOT Nintendo-Switch 2)
- EXTREME ENDURANCE FOR MONITORING DEVICES: Capture your crucial moments in high-resolution, even in harsh conditions; Engineered to deliver long lasting performance, the Samsung PRO Endurance SSD is a perfect fit for CCTV, dash cams and body cams; Get peace of mind with video recording you can rely on
- BUILT TO LAST UP TO 140K HOURS OF RECORDING: With capacities up to 256GB, the PRO Endurance records and rewrites up to 140K hours (over 16 years); Plus, with a warranty up to 5 years, you can rest assured that your data endures
- RECORD & PLAY IN FHD/4K: The PRO Endurance simplifies large file transfers with read/write speeds up to 100/40MB/s; Plus, FHD and 4K resolution support ensures that crucial moments are recorded in high-res so every detail is documented when it matters most
- CRITICAL DATA, SAFEGUARDED: From severe weather to extensive wear and tear, the PRO Endurance stands up to real-world situations; After rigorous testing, it stands up against magnets¹, X-rays², water³, drop⁴, wearout⁵, and stays cool under pressure with operating temperatures ranging from -25°C to 85°C⁶
Full Specifications
| Brand | Samsung |
|---|---|
| Color | White |
| Model Name | inches |
| Read Speed | 40 megabytes_per_second |
| Unit Count | 1 Count |
| Media Speed | 40 mb / s |
| Model Number | MB-MJ256KA/AM |
| Compatibility | Switch |
| Warranty Type | Limited |
| Item Type Name | Memory Card |
| Mfr Part Number | MB-MJ256KA/AM |
| Flash Memory Type | Micro SD |
| Compatible Devices | Camera, Drone, Gaming Console, Smartphone, Tablet |
| Additional Features | Wearout Proof, X Ray Proof |
| Warranty Description | 5 Year Manufacturer |
| Hardware Connectivity | microSDXC |
| Item Dimensions L x W | 0.04"L x 0.59"W |
| Memory Storage Capacity | 256 GB |
| Item Dimensions D x W x H | 0.04"D x 0.1"W x 0.59"H |
| Flash Memory Video Speed Class | V30 |
| Full listing title | Samsung PRO Endurance 256GB microSDXC Memory Card with Adapter | microSD for Dash Cam, Body Cam, and Security Camera – Class 10, U1, V10 (MB-MJ256KA/AM) |
Ready to buy?
Samsung PRO Endurance 256GB microSDXC Memory Card with Adapter | microSD for Dash Cam, Body Cam, and Security Camera – Class 10, U1, V10 (MB-MJ256KA/AM) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
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