[blue68f100]

Datakeeper is a seperate program for download. I have found that Synctoy by MS is a good free program for backup. As you know assist is needed if the unit is reset to factory, v4 is backward compatiable. If they offered the OS to you, take it. There was some minor bug fixes in the OS. The 4100 does not support LBA48bit addressing. So NO HD >137gig.

The resistor is 10 ohm not 10k. Snap did not bother reworking any unit that was <240 gig. I would not upgrade the HD's if your mb has not been repaired. But I would go ahead and upgrade to 807.

If you look for a replacement I would look for a Snap 4200,4400,4500 All Guardian OS units. But you must buy them complete with at least 1 HD installed with the OS installed on it. Then you will not have the 1T limit and will have Vista support with the current OS. There was at least one user that installed 4 x 750gig HD's with out issues.