Repairing the 24 Pin ATX Power Connector

As part of my new home server build, I picked up a used Super Micro SC216 chassis. This chassis has 24x 2.5″ drive bays in the front, 3x 80mm fans in the mid-plane, 7 half-height expansion slots in the rear, and dual PSUs. While dual PSUs are overkill, the rest of the features should make for a nice Xeon D based storage chassis.

Once the chassis arrived, I noticed that the previous owner had mutilated the 24 pin ATX power cable. The PS-ON, and the GND pin next to it, had been clipped at the connector and spliced together with a crimped pigtail splice. Typically, this is done so that the PSUs are always on when using the chassis as an external JBOD box. Since I would like the soft power button to function properly on the case, this needed to be fixed.

Luckily, I had an 24 pin ATX power cable from a dead PSU. Using that cable as a donor, I replaced the PS-ON and GND pins in the power connector. Then, I made a solder splice between the PS-ON (and GND) in the power distributor and the corresponding replacement in the connector. With the lines reconnected, I was able to power up my test board (an old core 2 duo board). Now the chassis is ready for a Xeon D motherboard.

-John Havlik

[end of transmission, stay tuned]

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