I'm trying to get my Antminer U3 setup. I've done all the correct steps with Zadig, but for some reason, when I try to run CGminer, it says
"No devices detected! waiting for USB hotplug devices" "Probing for an alive pool" " Pool 0 difficulty changed to 256" " Network diff set to 72.7G" " Pool 0 difficulty changed to 51" "Stratum from pool 0 requested work restart"

I'm on Win8.1 running CGminer 4.9.1

This is what my bat file looks like :  cgminer.exe -o stratum+tcp://stratum.bitcoin.cz:3333 -u foxtwofive.worker1 -p 123

Edit: I tried running on cgminer 4.9.0 and i get the same messages.

Edit 2: Got it working had to close bitcoin wallet that was running, solved the problem.