SamsungPRO Ultimate microSD Memory Card + Adapter, 256GB microSDXC, Up to 200 MB/s, 4K UHD, UHS-I, Class 10, U3,V30, A2 for GoPRO Action Cam, DJI Drone, Gaming, Phones, Tablets, MB-MY256SA/AM

Samsung PRO Ultimate 128GB microSDXCUHS-I class 10 U3 A2 V30TF2SD adapter10yr limited warranty[made in Philippines]there are too many counterfeit solidstate storage devices in the retail supplychain & it's an ongoing problem, even on AMZ. i now verify all SSD-s before putting them into production. counterfeits report incorrect storage capacities to operating systems, always overstating what's physically available.i purchased four, identical, new, 128gb units from the AMZ Samsung Store.legitimate Samsung TF card retail packaging is 3-layers deep: 1) stiff, external cardboard sandwich carrier: 2) liquid resistant, soft plastic, inner blister liner, fused all around the edges of: 3} the innermost, clear, stiff/hard PET, clamshell carrier; housing the microSDXC drive + SDcard adapter. counterfeits are not likely to be so well packaged.i then verified the full 128gb drive capacity (= 128177930240 bytes RAW). TF card was not formatted, so i performed a linux-hosted r/w test to confirm 0 dead storage cells on the RAW/unformatted card. during that media test, with no filesystem overhead, i observed average r/w of ~180Mbs/~80Mbs. that's real word, not "benchtest," cell-by-cell performance. the retail packaging states peak r/w at 200Mbs/130Mbs, but those numbers are theoretical. these cards are more than fast enough for my intended use (continuous, 24x365, 4kUHD in-cam security recording/monitoring).my security cams recognized these cards, formatted them as ext4 and record/playback 4kUHD @30fps to/from them w/o any glitches.the only thing that remains to be seen is whether or not these will give me 10 years of service.my fingers are crossed for that.

Every bit as good, if not better, than Sandisk Extreme Pro or Plus. Absolutely no issues in any of my devices and CrystalDiskMark at rated speed consistently.

Just what i expected.

I bought this for my son's Nintendo, works well, the speed is good. Nothing to complain.

Great card. Use in GoPro. Great read/write speeds and performance.

Love the professional quality of the card. Works great for the application. I love it!

I bought this Samsung PRO Ultimate 128GB microSDXC card to use with my action camera and DJI drone, and it’s been absolutely perfect. The read speed of up to 200MB/s is noticeable I can transfer large files quickly and record 4K UHD video with no lag, buffering, or issues.It’s ideal for high-demand devices like GoPro, drones, gaming consoles, or smartphones that need fast, stable storage. The included SD adapter adds extra flexibility for use with laptops or standard cameras.So far, it’s been super reliable, even under heavy use. If you need speed, performance, and solid capacity in a compact card, this is a great investment.

Holds storage on my drone and picture quality is good. Still need to test how the storage holds up