Hi -

I wrote up a HOWTO on adding a second fan to an Antminer S1 over on my blog, figured I would post a link.

All of the details are there, but the short of it is that I added a 4000RPM high end Delta to the rear of an Antminer S1, and also show you how to connect the fan so that it runs at the full 4000RPM.  Keeps my Ants nice and cool...

http://www.scottcking.com/?p=9

Enjoy!
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