I just purchased a 2020 NX 300 F Sport last night and this morning I put in a USB drive to check it out. I have a 32GB drive and a 120GB drive. The vehicle recognized the 32 and not the 120. I checked the formatting of the drives and the 32 was formatted as FAT32. I wasn't able to format the 120GB drive as FAT32 using Windows, but I did some research and found a utility that will allow you to format large drives. I downloaded "AOMEI Partition Assistant" which then allowed me to format the USB drive.

Added some songs and put it in the car. Whoo hoo. It works. I can now use my 120GB USB in the NX 300.

 

Wow thats a good news Foxwiz, I have the same NX