The XF UpdateThe XF Update is a completely new operating system for your XF551 disk drive that gives you many features you would expect to have had from the beginning.
The operating system for the drive has been completely rewritten so as to eliminate the problems and incompatibilities associated with the XF551 drive. The new operating system runs more commercial software, changes density properly, supports true Ultra Speed data transfer (actually, slightly faster than the 1050 Ultra Speed), and has an optimized interleave in high speed formats to produce the fastest possible operation. It is the update every XF551 owner should have!
Installation requires only a few simple solder connections. The XF Update sells for only $39.95 plus $5 shipping/handling.