Precision 5480 connection with U2723QE

Hello.

I've been trying to connect my Precision 5480 laptop with the recently acquired U2723QE. I've tryied with the included USB-C cable but no charging and no video. I've tryied with HDMI and HDMI adaptor that came with the Precision but no signal also. I've been cjhanging the input in U2723QE menu without success, also.

Could you please provide some help?