I see that the pinout information has been provided already so I can tell you that I used a scribe (pin will work too) to push in the locking tab to remove the pin the lifted it a little to lock in again. The locking tab is accessed in the rectangular opening of the connector. If you are uneasy about the change you can always try it out first to a power supply before connecting it to your miner. You will be very happy with these fans once you install them.