CM4 serial port?

Is there a serial port on the cm4 that I can bring out? I got the version without the modem so I have a blank plate where I can put a connector.

Or would I be better off wiring an extra USB device inside?

Just trying to clean up the outside when I’m using it.

https://docs.bitscope.com/pi-serial/

Looks like both of the onboard ports are in use, I thought it had a third port.

both? specs say there are up tio 5:

• 28 × GPIO supporting either 1.8V or 3.3V signalling and peripheral options:
Up to 5 × UART

Also people on forum says it at least UART2 should work: https://forums.raspberrypi.com/viewtopic.php?t=344365