Konica Minolta bizhub C451 - Manual (Page 241)

Specifying Utility mode parameters 3
C451 3-75
3
Touch [Port Number] in the Open API Settings screen.
The Port Number screen appears.
4
Press the [C] (clear) key to erase the value, and then use the keypad to
specify the desired port number (between 1 and 65535).