According to my research, it is actually only the Thunderbolt 4 port on the
"49B2U6903CH" and a USB-C with PD and DP on the
"49B2U6900CH". According to the user manual, you can switch off "auto-framing" on the
"6903" model. The manual also states that the
6903" monitor is fully compatible with MacOS, i.e. Macbooks and iMacs, including the KVM function.