Good day,

I have a Raspberry Pi running Minera, and selected CGminer 4.x as the running miner. I had 2 Rockminers running (37GH/s ea), and recently added an Antminer U3 (63GH/s). The Rockminers each generate fairly close to what they advertise, running at 30GH/s each, but the Antminer U3 only generates 28GH/s. In other topics people were talking about different settings they use with the exe program, but as I am using the miner on a Rasp. Pi, I can't use these settings. So was hoping for anyone to give me advice on what I can do to get more out of the Antminer. I tried switching the miner prog from CGminer to BFGminer, but then none of the ASIC miners are recognised.

I am currently using the supplied power brick, I have tried it with computer psu but no difference in speed hash rate.
http://s7.postimg.org/rp01h5xij/Screen_Shot_2015_01_29_at_01_17_58.png