I purchased 8 brand new SanDisk Ultra 32GB SD cards for use in an Orange Pi project. Set about to format the cards. Using the app "SD card formatter", the first card formatted flawlessly using XFAT. The second and third report error "FORMAT FAILED". Tried going to Drive Manager, changed the disk letter and attempted format from there. This time "FORMAT FAILED TO COMPLETE". Funny thing is, the adapter and SD card are recognized by the computer and allowed me to change the drive letter. Even bought a different SD card reader/writer... still exactly the same. WTF????