Next I installed a connector for power. I happened to have a panel-mount XLR (microphone) jack sitting around, so that’s what I used. These fans run on 12vdc (48vdc is commonly used with these connectors), so I didn’t have any concerns about the suitability of this type of connector even though it is not normally used only for DC power.
It is not pictured, but I also found an old laptop power supply that output 12vdc like the fans run on. I soldered a matching female XLR cable connector onto this power supply.
Be sure to match the voltage of the power supply to the circuit that you’re powering, take note of the fans’ polarity, and connect the cable connector and panel jack using the same pins. If you’re not familiar with basic electronics, google what happens to voltages when you put devices in series and parallel so that you don’t send your fans the wrong voltage or overburden your power supply. Ohm’s law is important :)
Obviously you can use whatever type of connector you like as long as it is rated for the voltage and current that you are using. Also, use a female connector on the side that the power is coming from so that the power supply can’t short out on anything.