usb serial com port on MacBook Pro M1, Monterey

Question

Level 1

4 points

usb serial com port on MacBook Pro M1, Monterey

I am trying to make a serial port connection to a 3D printer controller board. On my former MBP (2014 Retina, Catalina), plugging the board into the USB port creates connection /dev/tty.usbserial-1410. The usbserial device also shows up in the USB section of the system report. When I move the cable to the newer M1 MBP, no such devices show up in either the terminal listing of /dev/tty* or the system report. Is there a problem detecting the USB device and loading the driver for it on newer, Apple silicon Macs? Has anyone else succeeded with this type of connection?

Posted on Jul 6, 2023 11:41 AM

Reply

Answer 1

torroslo Author

Level 1

4 points

Jul 6, 2023 08:20 PM in response to Rudegar

In /Library/Extensions I find ProlificUsbSerial.kext, which I infer to be the driver for handling the serial port over the USB connector. It has a "modified date" of May 2022, which is when I acquired my MBP, and a "creation date" of 2010. It claims to be version 2.20 (copyright 2006), long before the M1 was conceived. If it hasn't been updated to be ARM binary, why would Apple include it in the driver extensions? And if it IS modern ARM code, why isn't it being loaded when a serial port shows up on the USB line?

Reply

Answer 2

Rudegar

Level 10

178,878 points

Jul 6, 2023 11:51 AM in response to torroslo

Have you checked the usb to serial adapter manufacturers web site for a newer driver? It might be it can never come to work without them making a native arm driver

Reply

usb serial com port on MacBook Pro M1, Monterey

Similar questions