Since I am out of the mining biz, I have the following turnkey outfit for sale.   Perfect kit for outfitting a new location.    Run a circuit, plug in and go.   All the pieces are there.

4 Avalon 841s with power supplies
Raspberry PI 3B controller (sans microSD card of course)
AUC with daisy chain cables
Tripp-lite Power strip
Power cords
L6-30 pigtail on the power strip
L6-30 outlet

And if you have a Cutler Hammer panel I'll send along the 30amp breaker too. 

Everything was operating perfectly late feb/early march with no issues: 53-54 TH performance.  In the photo below Raspberry Pi controller was on my desk getting dusted so is not seen there but is part of the deal.




Since I seem to have lost out on the opportunity to make $521 but not hanging on till a coin was found; I am asking $521 plus actual shipping charges.  . PM me directly.  I only get to log in once a day if that much so be patient on a reply.   Many thanks!