Everything seemed pretty straight-forward from the documentation except for one thing, the INT-USB jumper.
l previously used a v1.1 board w/ a ThinkPad running lubuntu to control it, but now will be using the LCD for the most part. This means that I should put the jumper on INT and the 12 (or 24) V power from the power supply will power the board? If I then wish to tweak some settings can I then plug the USB cable from a computer in or do I harder to power down and switch the jumper and restart with the computer as I previously did?
Well, re-wired everything, and tested the USB and panel functionality —- also powered up w/ the 24V power supply (but w/ the wrong SD card) and all seemed okay. Will look things over once more tomorrow and then secure things in the enclosure and reconnect the fan.