That screen shot doesn't show any active mining. Don't double click, cgminer is a command line application. Do you have the right command line options in your bat file? See the readme for command line options for your supported device.
FWIW, I had to use 4.9.0 to get my U3 to work, 4.9.1 wouldn't recognize it. YMMV
The file start-BTC launch and close very fast, this is the command line I use : " cgminer.exe -o stratum+tcp://eu-stratum.btcguild.com:3333 -u yassassin_1 -p 123 --gridseed-options=baud=115200,freq=750,chips=5,modules=1,usefifo=0,btc=64 --hotplug=2 "
I don't know which file "readme" you talk about.
Thanks