Konica Minolta QMS magicolor CX Reference - Manual (Page 104)

Interface
Daughterboards
QMS magicolor CX Reference Guide 2-30
Interface Daughterboards
This section describes how to install an interface daughterboard. Only
magicolor CX daughterboards can be used with the magicolor CX
printer.
1 Follow the instructions in “Removing the Controller Board”
on page 20, being careful to eliminate electrostatic buildup
before you begin.
2 Using a Phillips screwdriver, remove an optional I/O plate.