I got this monitor a few years ago for use with a system in which I already had a satisfactory setup for audio. It totally escaped my notice at the time that it supposedly has built-in speakers; a detail I didn't even realise until I recently replaced my desktop (with a Lenovo Thinkcenter) and set about setting everything up from scratch. My understanding is that the audio reaches the monitor via its HDMI connection, however I have had no luck so far. I'm now wondering whether this model only "looks" like it includes speakers due to the inclusion of a port for an audio 3.5mm plug. I've also noticed that the monitor's OSD has no visible guiding arrow beneath the graphic for volume adjustment.

I've wondered if this might either be because there's actually no
speakers in this model, or that perhaps I've somehow not configured the sound in
my Win10 correctly. So far I haven't found any definitive online
information whether this model is truly equipped for audio or not. Does anyone have any thoughts, information, or suggestions?