I got a new laptop this year and I couldn't even work out what protocols it supported. No where on the laptop spec sheet did it say that supports hdmi and displ

I got a new laptop this year and I couldn't even work out what protocols it supported. No where on the laptop spec sheet did it say that supports hdmi and displayport over usb c but when I use the plug for it it works. When I use the same adapter/plug on my phone it doesn't work.