Ricoh D117 Service Manual page 124

IC Card Reader (External Option)
4. Pass the USB cable from the IC card reader through the hole in the upper rear cover, and
then reassemble the machine.
5. Attach the clamps [A] to prevent the cable from sagging.
6. Connect the USB cable to the USB receptor at the left of the mainframe as shown above.
Either receptor can be used.
Prepare these clamps [A] yourself because they are not included in this kit.
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D117/D118 2-84 SM