I been trying to get an USB to Serial adaptor (FTDI chipset) to work. It's not happening either. I can see the port in the device manager and play with the port settings and assign any com port I want. But the Loader program never finds the ASCI. I've tried different drivers and different computers, but still not happening. Fortunately I have a computer with a Serial Com port and can verify the cable and null modem are functioning with the ASC1. But I would like to use my laptop to update other peoples ASC1s when/if needed. I'll be curious to see what Brian comes up with for an adapter.