Ricoh M281 Series Service Manual page 142

USB Device Server Option Type M19 (D3BC-28, 29)
6. Only when installing this option in NA, fix each ferrite core with the cable tie [A].
7. Insert the Ethernet cable [A] into the Ethernet board on this option.
8. Insert the other end of the Ethernet cable to a PC for network setting.
9. Plug the power cord into the wall socket and turn ON the main power.

Do not unplug the USB connector while the machine is recognizing this option. It may
take between 30 seconds to 1 minute to finish recognizing it (the LEDs by the
connector light up when finished; see below). If unplugged, connect the cable again.
D255/D256/M281/M282 2-114 SM