I start to mine with Antminer U1 (USB 1.6GH/s)

I just start mine a few day ago

but
http://puu.sh/6tShd.png (in BFGminer) [CGMiner is fine but got some bug.]
http://puu.sh/6tSQW.png (Driver)

did i do something wrong ?

and here my command
bfgminer.exe -S antminer:all -o us1.ghash.io:3333 -u xxx -p xxx --set-device antminer:clock=x0781