Thanks to both of you who replied, I got it working with your help!

The problem was the port I was connecting to. Using a USB-A to USB-C cable, connected to the Mac Mini M1's USB-A port got it to work and the device now shows up as /dev/tty.wchusbserialXXXXX

Very happy about this, just in time before the weekend. ;)

Thanks again!

Complete noob here, trying to get his first ESP32 up and running.

I've bought the PICO DIY Kit, that contained the ESP32 Downloader. I'm connecting the 5 pins of the Downloader to the appropriate pins on the Stamp Pico. Then I connect the USB-C cable from the computer. All drivers are installed. The new COM port does not appear, I've tried both on Windows and also on MacOS and yes, I've followed all instructions for the driver installation. Also, no LED is lighting up on the Downloader. I've even bought a second kit to rule out any defects, same there.

Am I missing some basic step here?

Thanks in advance for any help.