I have the DJI FPV drone and purchased a SanDisk Extreme Pro U3 V30 A2 256GB microSDXC UHS-I card. It will not format in the drone. Always says "Format Failed." I formatted it on a Windows PC (exFAT) and when I put it in the drone it tells me "SD card too slow."  Is it because my card is the "Pro" version?  Manual says SanDisk Extreme U3 V30 A2 256GB microSDXC is supported.

Hi there. Thank you for reaching out and we're sorry for the trouble. Can you please try to use a different SD card to further isolate the issue? we prefer to use the one listed on our recommended list. Thank you for your cooperation.