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Midisport 2x2 Anniv Ed Merge Mode: Power cycle may be required to activate
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Merge Mode

In Merge Mode, the MIDISPORT 2x2 Anniversary Edition functions as a standalone device (i.e. it does not operate as an interface to a computer).  All MIDI data from the In A and In B ports is combined (merged), and this merged stream is output identically on both the Out A and Out B port.  In this scenario, power must be provided by an optional USB-type external power supply, and the MIDI Thru - USB/Merge button must be set to the ‘in’ position.

NOTE: In some cases, you can use Merge Mode while connected to a computer via USB, but only if the operating system is not currently running. In this scenario, the computer serves only as a power supply while MIDISPORT 2x2 Anniversary Edition is operating as an independent device. This is possible, because some computers provide power to their USB jacks even when shut down or in sleep mode. Please note that it may be necessary to disconnect and reconnect the USB cable after shutting down the computer for MIDISPORT to disengage USB Interface Mode and enter Merge Mode.  Check the documentation associated with your computer to see if it provides power to its USB jacks while shut down or in sleep mode. A separate USB-type external power supply is not required if MIDISPORT is connected to such a jack.