The I2C connector is 4 pins. There are 4 connectors on each board. 2 on both sides of the USB connector and 2 on the edges right next to the edge with the USB connector. The 3 Pin connector is for the fan. TerraHash boards will each come with a I2C jumper cable to daisy chain the board with another one.
That's great. I'm glad the boards are coming with I2C cables. No need for us to buy them now. Thanks TH.
