Konica Minolta magicolor 5570 - Manual (Page 252)

Duplex Option 238
Duplex Option
Duplex (Double-Sided) printing can be performed automatically with the
duplex option and enough memory installed. See “Duplexing” on page 128.
Installing the Duplex Option
1
Turn off the printer.
2
Remove the cover on the right
side cover.