It appears the 'beacon' is their service:
strings on beacon got a lot... what makes me feel this is their 'stuff':
could not read eth0 IPv4...
beacon.api.meetlima.com
/home/denis/lima/git/lima-wanserr-firmware/openwrt/staging
A quick look it appears that
pin | signal |
9 | TX |
8 | RX |
7 | gnd |
This is the unpopulated set of through-hole pads on the daughter card near the RJ45 end of the card. With jtagulator connected