Today I ditched the 5v 20w PSU that came with a 4 port USB Hub and put in a 5v 70w PSU.
I manage to run 1  x 2 PAC stick at 400MHz for 1 hour. (HW2).
This is running on Windows 10, cgminer d5.....
For cooling I used a strong laptop fan that blows through the fins. Voltage was set at 1.634, which gives .800 across the ASIC
Hash was 43.57Gh/s
 I would post a photo of cgminer if i knew how?

Gerrymcc