41CL and Mac Mojave - USB-to-serial device no longer in /dev

[Sylvain Cote]

First you need to find what USB-to-serial chip that you have in your dongle.

1. start a terminal session (aka command line or shell session)
2. unplug your USB-to-serial dongle
3. type: system_profiler SPUSBDataType [RETURN]
4. plug your USB-to-serial dongle
5. type: system_profiler SPUSBDataType [RETURN]
6. comparing the two list should reveal the USB-to-serial chip that you have in your dongle
   

Chip information should look like this:

Code:

TTL232R-3V3:
Product ID: 0x6001
Vendor ID: 0x0403  (Future Technology Devices International Limited)
Version: 6.00
Serial Number: FTDO73M5
Speed: Up to 12 Mb/sec
Manufacturer: FTDI
Location ID: 0x14140000 / 10
Current Available (mA): 500
Current Required (mA): 90
Extra Operating Current (mA): 0

Excluding the Chinese clones, the two main USB-to-Serial chip manufacturers are FTDI and Prolific.

FTDI VCP drivers for macOS can be found HERE
Prolific drivers for macOS can be found HERE

Warning: the FTDI drivers for macOS are generally so bad that Apple decided to write one for themselves, so if you have a FTDI chip macOS should normally see it, if not then the procedure is more involved.

Sylvain