have attached an optional expansion chassis and you are using an external video controller card (such as an Enhanced Graphics Adapter) in the expansion chassis, set this switch off. Otherwise, set it on.
Switch 6, external monitor
If switch 5 is on, the computer ignores the setting of switch 6.
6 Inserting the Startup/Operating 1 DisketteFollow these steps to insert the Startup/Operating 1 diskette:
1.Hold the diskette with the printed label facing up and the arrow pointing into the diskette drive, as shown in the following illustration.