See online U2723QE User's Guide page 12 for port numbers. Possible setups that should work = Mac mini M2 DP out port --> U2723QE DP to DP cable --> U2723QE #4 DP in port (NOT the #6 DP out port) Mac mini M2 TB 4 port --> retail TB/USB-C to DP cable --> U2723QE #4 DP in port (NOT the #6 DP out port)
I have a new Mac mini M2. I also have a Windows PC.  Two displays. U3219Q and S2722QC. No issues with the U3219Q, whatsoever. PC connects to U3219Q DisplayPort, and S2722QC HDMI1, this works great. Mac mini M2 uses HDMI to connect to the U3219Q and Thunderbolt to the S2722QC. HDMI works fine, Thunderbolt (USB-C) does not. No signal, it does not even get recognized on the Mac mini M2. I had a 3rd party cable from a large online retailer, then I got the official Apple cable. No change. Help?
S2722QC, no video on USB-C from Mac mini M2 TB