LG MP500-B Series Owner's Manual page 12

<Model that requires 3 fixing screws for assembling
the guide bracket>
<Model that requires 4 fixing screws for assembling
the guide bracket>
12
Assemble the MP500-A/B*** to the guide bracket
3
with the fixing screws.
<Model that requires 3 fixing screws for assembling
the guide bracket>
Attach the MP500-A/B*** to the guide bracket with 3
fixing screws.
<Model that requires 4 fixing screws for assembling
the guide bracket>
Attach the MP500-A/B*** to the guide bracket with 4
fixing screws.