I am trying to install a credit card processing terminal for POS, and am having a bit of trouble. The terminal has a serial output, but my motherboard has no COM ports or serial inputs. I was told to use an adapter for Serial to USB, but it doesn't fit. The male and female parts look like they go together, but the thumbs screws are abnormally long, which prevents the connection from even getting close. Anyone have some insight they wish to share? Thank you