Game Input MultipleXer

when i plug in the ttl adapter into my computer and go to device manager, i get a yellow exclamation mark.

Hello everyone. I am using the Arduino Leonardo for this project. I managed to upload the .hex file onto the leonardo, by quickly plugging /unplugging the usb cable during arduinobuilder upload. After doing this, my leonardo no longer shows up in the device manager and com ports. When i open GIMX la...