When installing multiple options, the following order is recommended:
Attach the paper feed unit.
Attach the paper feed unit to the bottom of the printer.
Install the hard disk. (SP C342DN only)
Install the optional interface board.
Install in the slot of the printer.
Only one interface board can be installed.
Insert SD card options. (SP C342DN only)
Insert in the SD card slot of the printer.
There are two slots for SD cards.
Each slot supports different types of SD cards.
If you want to use two or more SD cards that can be inserted in the same slot, contact your sales or service representative.