M-AUDIO MIDISPORT 2x4 - Manual (Page 18)

6. “OMS Driver Setup” shows the MIDISPORT in a list when OMS successfully finds the driver.
Click OK. OMS will now define (shows “Identifying”) the MIDISPORT output ports.
7. The “OMS MIDI Device Setup” dialog box will appear showing the MIDISPORT’s output
ports with an open check box to the left of each port. You will now have to check these
open boxes to enable the output ports. Click on OK.
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