Apple Remote Access MultiPort Server - Manual (Page 26)

3 Click the triangle next to the port grouping (or double-click the line) to display the name,
status, and configuration of each port.
The port name is determined by the slot in the computer in which the card is
installed and the number of the port on the card. For example, SS6 C1 Port #1
means that a Smart Serial 6 card is installed in Slot 1 in the server computer
and that Port 1 on the card is selected.
26 Chapter 3 / Setting Up the Server