Yamaha MOTIF RACK ES Supplementary Manual page 10

(2) In the "YAMAHA USB-MIDI Driver" dialog, merge the output ports.
• OUT
Change the settings to connect the two output ports which are used by the sequencer
and Multi Part Editor to MOTIF-RACK ES input port 1.
For example, change the settings as shown in the illustrations below when using the
output port 1 and output port 2 in the Studio Manager (Multi Part Editor) and
sequencer.
OUT
(3) Click [OK] to close the dialog.
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