Went into town to do some work related stuff today and popped into a local charity shop. There I spied a DSE usb floppy drive in it's box.The DSE code is XH8291. I was expecting it to be one of those 1.44meg capacity only drives you keep hearing about. Plugged it into my XP box but in a 720k drive thinking it wouldn't read it but it did. Did a few file copying to from the desktop using the mice and it did it's thing. Opened a cmd prompt window and ran format. It instantly detected it was 720k disk and formated accordingly.
Needless to say for the small outlay and the fact the money went to charity I'm very happy with the purchase.