Konica Minolta Magicolor 5440 DL - Manual (Page 150)

Duplex Option 140
Duplex Option
Duplex (2-sided) printing can be performed automatically with the duplex
option and enough memory installed. See “Duplexing” on page 61.
Installing the Duplex Option
1
Turn off the printer.
2
Remove the cover on the right
side cover.