Missing COM ports in Windows

[Crzyrndm]

Crate version is latest published (4.2.0)

I have a USB connected cell modem that enumerates in windows as 5 COM ports. On some computers, all of these are listed in device manager under "Ports (COM & LPT)" while on others, 2 of the ports only show up under "Modems".

In ^^, COM5 and COM7 are the "modem" ports

• Those two ports are never listed by serialport::available_ports()
• YAT / TeraTerm find both of the ports (YAT with a name, TeraTerm has no info)
• https://docs.rs/serial2/latest/serial2/struct.SerialPort.html#method.available_ports does list those two ports on all tested computers

It would greatly simplify the hack I currently have in place to find the modem ports if those "modem" ports could also be listed

[DanielJoyce]

Yeah, for some reason serial port rs tends to skip those ports associated with modems, happens on linux too ( TTYACMx ), though opening a modem as a serial port is supported and supposed to work, so you can configure the modem.