Samsung ML--6100 - Manual (Page 98)

6. 15 Printer Options
2. Observe the location of the support unit’s connector and tabs.
Tab
Connector
Tab
3. Align the printer with the support unit and lower it into place on the
tabs and connector.
4. Load paper in the cassette.
5. Reconnect the power cord, then turn on the printer.
Note: To verify proper installation, print a configuration sheet.
To print from option cassette, configure the printer driver from your
application prior to printing. See “Configuring the PCL Drivers”
(page 4.2).