Hi Chris, the used PIC18F2xk80 only handle CAN2.0 and not CAN FD. If you want to use Omega2+ the USB port would be the best way to connect a MCU of your choice . The fastest way to get a working Linux CAN FD board is to use a SBC/CPU with CAN FD IP or something like BananaPi Zero with MCP2518/TCAN4550. Regards Gerd