ML1120/ML1190 User’s Guide - Getting started > 11
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1.  Paper Tray: insert cut sheet paper for use by the printer (one 
sheet at a time)
2.  Power connector: connect to printer power cable.
3.  Paper Guides: can be adjusted as required to locate the left edge 
of cut sheet paper. 
4.  Pin Tractor: to load and feed continuous forms.
5.  Serial connector: connect to serial interface cable.
6.  USB connector: connect to USB interface cable.
7.  Parallel connector: connect to parallel interface connector.