Proper way to define port dimensions in SIMULINK

What is the proper way to define port dimensions in SIMULINK?

I used to define them as:

Port dimensions (-1 for inherited):

• 4

But then I see that some people use:

• [4x1]

The default in SIMULINK is vector, so when you connect an output of the form [4x1] with an input of 4, there is no error, but SIMULINK clearly shows a diference on the signal names, it recognizes one is [4x1] and the other 4. Is there any difference between the two methods, anything I should worry about?

[Sadiq Shaik Abdul]

https://www.mathworks.com/matlabcentral/answers/386679-what-is-the-difference-between-a-scalar-n-and-a-vector-1-n-when-specifying-simulink-signal-size-or?s_tid=answers_rc1-1_p1_Topic