Tajima tmfx upgrade to USB

How does it receive data now? I upgraded an original Neo (2002) recently. I purchased a reader from Pinpoint International https://www.pinpointinternational.com. It plugged right in to the plug that the floppy drive used. It works well but I can only load one design at a time and there can only be one design on the 2G thumb drive. I need to format the thumb before adding each new design. I'm supposed to be able to keep a few designs on the thumb according to Pinpoint but possibly the thumbs I have are too cheap or I need to upgrade the machine's software? So its a bit more work but the machine is still running so that's the important thing.