I will be honest with you : USB miners are not profitable anymore, since a long time, either they are ran on common computers or on a Raspberry Pi. So I suggest you to buy no USB miner at all, since you will never break even. That would be wasted money.
Ohhh thats sad to hear..
Even I wont make a 0.000000000000000000000000000000000000000000001 bitcoin?
If I can make even smallest value, I will try. Can you help me? Thanks