I purchased this usb2 pcie 5 port
http://www.amazon.com/gp/product/B0026I4DZ2/ref=oh_details_o04_s00_i00?ie=UTF8&psc=1So it looks like up to 5x hubs with 40-44 sticks each will work on one pc.
I realized that I can put these hubs all in a row. So I found a nice product for fan screens
http://www.lemproducts.com/product/4161/dehydrator-accessories it is safe up to 275 f
I will cut a piece to fit on top of 3x 49 port hubs
The photos below are not complete but you can see that the plastic screen would go over 3x even 5x hubs.
I believe 6x 120mm 12 volt fans would cool all 3 hubs. I should have a complete setup by Wednesday .
I have a bamboo tray from target. it will fit the 3 hubs and the 3 atx psus will stack under it.
setup should hash close to 45gh.
I will understock the hubs 43-45 not the 49.
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got second hub running 2 hubs
see silverstone filter stops short issues