U4919DW, Dell Soundbar compatible?

Can anyone confirm/deny if the U4919DW is compatible with any Dell Soundbar? I mean the Dell Soundbar that you mount directly under the monitors in those click in mounting points (sort of similar to Dell AC or Dell AX range). I can sort of see a couple of little holes that might be mounting points in the Manual (underside, below I/O) but not sure if they actually are mounting points since they are not specifically mentioned. I seem to remember at some point there used to be a curved Dell Soundbar available?

Thank you