Samsung SyncMaster 400MX-3 User Manuals page 59

1. The Multiple Display Control is originally set to COM1.
2. If any port other than COM1 is used, COM1 through COM4 can be selected in the Port Selection Menu.
3. If the exact port name that is connected to the LCD Display using a serial cable is not selected, communication will
be unavailable.
4. The selected port is stored in the program and used for the next program as well.
System
1. Click System in the main menu to open the system adjustment screen.
Info Grid shows some basic information necessary to System.
1) (Power Status)
2) Input