Sun Microsystems UKT-KVM-2U16-Z - Manual (Page 9)

The Configure computers menu allows you to assign unique names to each
computer and change the keyboard and mouse type for each connected compu­
ter.
As this point you will have needed to have decided which computers are to
be connected to which ports on the back of the KVM.
Note:
The port numbering layout on the rear of the KVM is not intuitive.
Quick Installation Guide Rev. 1.1