On Sat, September 30, 2006 1:28 pm, Ed Groenenberg said: Hi Ed, The BA356 has its jumper and terminator already installed behind the blowers, though that it has a dual channel personality module doesn't necessarily mean the shelf is a split-bus one. If you've powered it up and it's spun up drives 0, 2, 4 then 1,3,5 etc you just need to swap the terminator and jumper boards. Remove the blowers on the back and the jumper cover at the bottom (metal box, it's a pig to remove :o)) then swap the boards over. If I was thinking straight I could tell you how to check which board is connected where by removing the drives and looking at the backplane, maybe someone else will do that for me :) cheers -- adrian/witchy Binary Dinosaurs creator/curator www.binarydinosaurs.co.uk - the UKs biggest home computer collection?