In the Sonos User Guide, under the Playbar section, I’m wondering what it means by the picture of the Digital In (optical) means. As in the green vs the red?

I am considering buying one of these to connect to my computer for music & video (I use Plex) My computer has a Toslink port that I currently use on an aged 5.1 system. The light color is red currently. The computer supports Dolby Digital sound. What is the picture in the manual trying to clarify by the colors?
Thanks
Best answer by Ryan S
Hi Hoovy, glad to hear you’re taking time to read manuals and do research! In this case, you’re just overthinking it. The red x image is just showing the cable upside down. You want to have the optical cable plugged in with the roundish side on the bottom, not the top. The port will only fit one way, but the image is in hopes that people won’t try to cram the cable in the wrong direction and break something.