![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif)
![](https://ip.bitcointalk.org/?u=http%3A%2F%2Fdiyasic.com%2Fimages%2FHF-connection1.png&t=592&c=qU0wV3s_9X50jQ)
This is a 3 board set up, with the master taking the usb plug http://www.amazon.com/gp/product/B000IV6S9S/ ..
You need 3 daisy chain cables, Unfortunately Im not sure if these are custom, I can try to find out..
Slave 1 and Slave 2 connect together, the slave 1 connects to master 1 as in the diagram. Then plugging in the usb to the master usb connector controls all 3 boards.
Here is also a shot of my sierra, not in this case Slave 1 is under Master 1 and Slave 2 is to the right.
![](https://ip.bitcointalk.org/?u=http%3A%2F%2Fdiyasic.com%2Fimages%2Fsierra1.jpg&t=592&c=Che8-8ZTXJxJ7Q)