TYPE C USB on Mac cannot connect to Arduino board.

[matthew_poh]

I tried the initial project called blinking lights

the compilation is ok, but it cannot be uploaded to board. is this about type C USB? IM on max osx..

Arduino: 1.8.2 (Mac OS X), Board: "Arduino/Genuino Uno"

Sketch uses 960 bytes (2%) of program storage space. Maximum is 32256 bytes.
Global variables use 9 bytes (0%) of dynamic memory, leaving 2039 bytes for local variables. Maximum is 2048 bytes.
avrdude: ser_open(): can't open device "COM1": No such file or directory
Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

Sketch uses 960 bytes (2%) of program storage space. Maximum is 32256 bytes.
Global variables use 9 bytes (0%) of dynamic memory, leaving 2039 bytes for local variables. Maximum is 2048 bytes.
avrdude: ser_open(): can't open device "COM1": No such file or directory
Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.

[system]

(deleted)

[westfw]

this is because you have not selected the correct com port

Which we can tell, because "COM1" is the default windows-style port name, while on a Mac it should end up looking something like "/dev/tty.usbmodemfd12345"
Arguably, the Mac version should not default to a PC-style name, but...