Is anyone using a SanDisk Extreme Plus microSDHC card that's rated UHS-I Speed Class 3? It doesn't have the recommended V30 Speed Class, but U3 means a minimum sequential write speed of 30 MB/s which should be more than enough for 4K at 100 Mbps. I've read that there have been some compatibility issues with certain cards, but if someone has this one and can confirm that it works 100%, that would be nice. I don't have the Phantom 4 Pro yet, but I happen to have this card lying around. Picture for reference.

-The first thing you need is a UHS-I, because the pins configuration.
-Second: at least must write at 15MB/s. If you buy a Class 10, these cards writes at least at 10MB/s and not at !5MB/s.                         I recommend to get a V30 Video Speed Class, thinking in 4k videos.

Take a look at these links:

www.sdcard.org/consumers/choices/speed_class/index.html

www.sdcard.org/developers/overview/bus_speed/index.html

In another thread somebody said that he has a couple of Sandisk Extreme Plus 32.
Look for a thread " Unknown sd error"

I've tested the same card except 64gb without any issues.  

jonathanp Posted at 2017-3-28 18:44
I've tested the same card except 64gb without any issues.

So it has the exact same specs apart from the capacity? No V30? The most common problems are corrupted files and the app saying that the write speed is too low. But if these problems are not present, that's nice.

-Sandisk  Extreme and  Extreme Plus, these are UHS-I and U3 / V30.

-Samsung  Pro+ : UHS-I and U3

-Transcend Ultimate: UHS-I and U3 / V30

-PNY  Elite  and  Turbo: these are UHS-I  and  U3

Bullflyer Posted at 2017-3-29 00:36
-Sandisk  Extreme and  Extreme Plus, these are UHS-I and U3 / V30.

-Samsung  Pro+ : UHS-I and U3

Some SanDisk Extreme Plus models don't have the V30 rating, and I need to know if a regular U3 rating is enough for P4P so it won't choke on the higher bitrate 4K. It should be if you do the math, but I've heard different experiences.

http://www.phantompilots.com/thr ... 05274/#post-1086299

Helimage Posted at 2017-3-29 01:06
Some SanDisk Extreme Plus models don't have the V30 rating, and I need to know if a regular U3 rating is enough for P4P so it won't choke on the higher bitrate 4K. It should be if you do the math, but I've heard different experiences.

V30 is Video Speed Class 30, and U3 is UHS speed class. It's suppose that both specifications are the same.  V10, V30..... are new specifications.
But if someone who knows more from a technical point of view can confirm it, it would be better.