type-c video output

I have a Legion 5 15ARH05H laptop. Specs shows that type-c is capable of video output. https://psref.lenovo.com/syspool/Sys/PDF/Legion/Lenovo_Legion_5_15ARH05H/Lenovo_Legion_5_15ARH05H_Spec.pdf I was always able to use it for portable monitors until earlier today. I unplugged the cable of my...