Ricoh Aficio SP 4110N - Manual (Page 182)

14. When the optional duplex unit was removed, push in the duplex unit along the rail in the
back of the printer.
AUB226S
15. Securely push the duplex unit into the printer.
AUB227S
16. Close the paper exit cover until it clicks.
AUB404S
17. Turn the power on.
10. Removing Misfed Paper
180
10