I ordered a 10 pack of these when I saw this post. I had been doing the "lift pin 5" trick previously on
fasttech 2596 boards. I got these in, and they were a TAD bit bigger then the boards I have been using, but I figured it was a small price to pay to not have to lift pin 5. Now mind you, I've only tested 1 board so far, but it seems the on/off holes do NOTHING... no voltage between the holes, no continuity, either.If you bridge them, the board puts out, and if you DON'T bridge them, the board puts out... The hole closest to the input side DOES seem to have continuity to IN-(ground) and pin 3, and the one closest to the output has continuity to pin 5. Long story short, I connected a 330 ohm 1/8w resistor between pin 5 (no need to lift it, if you do, it doesn't work) and IN+, and connected my momentary N.O. to the on/off holes, and it works fine now.