Roland UM-4 Owner's Manual page 9

Introduction
Before You Begin (Attaching the Rubber Feet)
If you will be using the UM-4 by itself without using the separately sold rack mount
adaptor (Roland RAD-50), please attach the rubber feet to the bottom of the unit as
shown in the diagram.
fig.01-05
* If you will be using the separately sold rack mount adaptor (Roland RAD-50), do not
attach the rubber feet. Attach the unit using the screws included with the Roland RAD-
50.
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