I'd like to reserve 12 if possible. Waiting on coin base

Was running 5 Antminer u1's on a Rosewill RHB-520+RPI+Minepeon all weekend 0981 over clocked giving me ~10gh/s. I'm home now and one miner drops to .50/ghs with the others bouncing around 1.9/ghs. The wall wart reads 5v 3.5a, which should support the 5 miners+fan right? What happened to my ant?! I rebooted and reseated the ants, but why run for 3 days solid no problems, then this? Am i too close on power?

9fe64302ede4c12fb45679b00056a3c34c53773d9739ae54eee1066b183567f5

PM'd

Looking for ~10GH/s but am open to whatever. PM me what you have. Have BTC.

Hey all-
I ordered two ASICminers Erupters to play with (I know I am losing money but I don't care) and am using Asteroid. I've got one of them running just fine, but the other is not doing anything. The LED will flash every now and then but the system is reading ~335.8MH/s. Any ideas? I was enjoying learning about this the hard way but its starting to aggravate me.
Anyone?

I'm on a 2010 MacBookPro using the latest Asteroid miner.
Edit- They both mine ~335mh/s when plugged in one at a time.

-Ben