The only trouble i have is, the usb miner is working slowly, the hash rate is about 2-3 Gh/s. I've changed the mhz to 150,125, but the results are pretty much the same, arround 4Gh/s.
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fimgur.com%2Fa%2FTWWKQ&t=665&c=wRDvpBZI8BApoQ)
Are you using vthoan's cgminer 4.10? I know with the official ckolivas cgminer 4.10, USB device is detected as UMO (?) and gives half the hash rate. 100 Mhz should give you around 10 GH/s on correctly recognized device. Unless the hardware is defective, it could be a the wrong cgminer.
Thanks for the help. I'm rebuiding cgminer and try again.