Originally Posted by Simon_Gardner
the SD tools apps is used by many, it seemed to crash for me a bit.
You'll need to probably enter /storage/extSdCard as the location, else it will ask you to install some type of file explorer.
So what speeds are you seeing with your pro card. If its really 50 - 60 MB/s..then there is no question I'll go for that. an improvement in write speed would be most welcomes as well.