Argon One uses pin 7 for the power button, and pin 8 to indicate power status (it sends a shutdown signal to the monitor if no power is detected on pin 8). MacArthur uses pin 7 for NMEA 0183 TX1 and pin 8 for UART0 TX (Maiana). I think the Argon pins are hard wired, so you'll lose the MacArthur functionality on these pins.
Argon One uses pins 15/16 for IR TX/RX, these aren't used by MacArthur so there will be no conflict.
And Argon One uses I2C for fan control, this should happily coexist with other I2C devices attached to MacArthur.
Argon One uses pins 15/16 for IR TX/RX, these aren't used by MacArthur so there will be no conflict.
And Argon One uses I2C for fan control, this should happily coexist with other I2C devices attached to MacArthur.