Ricoh D146 Service Manual page 267

SMART CARD READER (D739)
Rev. 10/08/2013
11. Remove the cut-out in the cover and pass the USB Cable through the hole [A].
12. Insert the USB Cable into the LEFT USB Port on the controller.
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Make sure to insert the cable into the LEFT USB Port.
D146/D147/D148/D149/D150 2-196 SM