The first problem I ran into is getting a power supply for the XT motherboard. The older machines that use the AT form factor and not ATX have a AT Power Supply. They don’t work together.

However, again I didn’t want to buy an AT Power Supply – people are asking a lot for them. Besides I have plenty of ATX ones.

Well, where there is a problem – somebody has a solution. There is a ATX to AT adapter – that will let you connect the ATX power supply to an AT/XT motherboard.

Here is the AT connector on the mother board

Project 8088 - Converting an ATX Power Supply to AT

Since on the ATX motherboard – the system board operates the power supply. The conversion cable breaks out that connection to the on and off switch.

Project 8088 - Converting an ATX Power Supply to AT

Here is the end that connects into the atx power supply.

Project 8088 - Converting an ATX Power Supply to AT

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Project 8088 - Converting an ATX Power Supply to AT