Standard M1 and M2 chips only support Thunderbolt 3, whereas M1/M2 Pro/Max/Ultra chips all support Thunderbolt 4. This is a Thunderbolt 4 dock.What is the technical limitation that prevents it working with non-Pro processors?
The dock will probably work fine if you plug it in, since TB4 is backwards compatible with TB3, it's that Anker is opting to not officially support it on non-TB4 machines. (CalDigit takes the opposite approach by providing official support and a handy table showing what capabilities their TB4 dock has on everything from plain old USB-C to TB3 to TB4 machines).