I got my serial console installed. This router is running a modified version of LEDE, I had not read that anywhere yet...
_________
/ /\ _ ___ ___ ___
/ LE / \ | | | __| \| __|
/ DE / \ | |__| _|| |) | _|
/________/ LE \ |____|___|___/|___| lede-project.org
\ \ DE /
\ LE \ / -----------------------------------------------------------
\ DE \ / Reboot (17.01-SNAPSHOT, unknown)
\________\/ -----------------------------------------------------------
=== WARNING! =====================================
There is no root password defined on this device!
Use the "passwd" command to set up a new password
in order to prevent unauthorized SSH logins.
--------------------------------------------------
Linux LEDE 4.4.198 #0 SMP PREEMPT Mon Oct 12 13:54:16 UTC 2020 aarch64 GNU/Linux