Offizieller Kommentar
As production changes occur regularly, we cannot officially guarantee 100% compatibility with any storage devices across our product line due to the possibility of a conflict between the device memory manager chipset and the USB host chipset on the player.
I have personally used a SanDisk Extreme Pro USB 3.0 128GB drive, Corsair Voyager GTX 3.0 128GB drive, and Samsung T5 1TB SSDs with a variety of models and only ever had one issue which was resolved by changing the file format.