O.K. Now that I found out a bit about the controller, I've found that I have a slight problem: 1.) The Adaptec 2070 is an RLL controller 2.) The Seagate ST-506 5MB HDD is an MFM HD. 3.) Even if the card was MFM, I really don't feel like doing anything in hex. Now for the questions: 1.) Does anyone have a spare PC or XT MFM HD controller laying around? If you do, what would you want for it (please send me a personal email). I do agreee that the WD controllers are more direct, but any controller that'll work should be fine. 2.) How do I get an external floppy to work with the XT? I have a cable and P/S salvaged from a 4869 (think that's the model #) IBM drive (case and drive are long gone) connected to a full-height IBM drive. I have the 4869 cable connected to the port on the floppy controller. Thing is, it dosen't work. Do I have to change a jumper on the controller board, or do I need to change the DIP settings on the M/B (If I need to change DIP's, just tell me, and I can check the setting list on IBM's site). 3.) Anyone have an external TRS-80 disk box (with P/S)? It dosen't necessarily need to have a drive in it, because I want to use it to house the IBM drive in (I was thinking of using a Disk II box, since it would probably match better, but they don't have a P/S). ThAnX,