Well, I've got to give a toast to the folks in DEC Engineering, it may be that they had to deal with Field Circus screwing things up, but I for one really appreciate that DEC used keyed connectors, and appropriate cables, and sturdy hardware. I'm also glad that whomever designed the TQK70 did so such that plugging it in backwards in the Q-bus does it no apparent harm. I reassembled a VAXServer3400 after cleaning it and got the dreaded "E" in the display, after careful diagnosis (with the power on!) I noticed the TQK70's chips were on the wrong side of the board! (Is there any good way other than lying on the floor on your side to insert things into a BA213?) Powered off, pulled board, crossed myself and re-inserted it correctly. Voila, system boots and tape works fine. Cheers! --Chuck