bardos Posted January 15, 2020 Posted January 15, 2020 I know this is a bit of a zombie thread, but.... I am in it right now with an Optiplex 790 inside a new ATX case. I have the original 5 (or 6, including the blanked out one) power pin and I am deciding how to wire it up to the original 2 wire pin coming from the case. My understanding, after reading this thread, is to crop off the the 2-pin connector on the case power switch and connect them, splice them into the yellow and black cables coming off the original switch. Question: this connector on all the motherboards I have seen does not have polarity, no + or -, yet in this thread they are given positive and negative values? Then do the same for the LED connector, hooking up the original ATX case 2-pin connector to the orange+ and blue-. This does have polarity. What does it mean to leave the red cable "Normally Open"? Does that mean just leave it hanging connected to nothing, or...??
Tryven Posted June 6, 2020 Posted June 6, 2020 OK so I really want this to work as well, all I have done so far is cut/splice the yellow wire and black wire to an arcade button. It works and turns the pc off and on. But I am still getting that f1 power button failure messege. Can't seem to get rid of it all other wires are uncut to the original power button. The 2 I cut are not attached to anything on the end the other end still to original power button. Anyone have another suggestion. To fix?
eclark5483 Posted November 30, 2020 Posted November 30, 2020 It's actually, a pretty easy fix. You guys just need to check out a couple videos I did on the Optiplex 3010 which uses the same type of connectors. The pin out on the larger GPIO is a bit different then the 790, but the 5/6 pin small wires by the ram are the same. I'd do a video and show you how it's done if I had a spare 790, but unfortunately you are SOL.
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