Sending program changes to multiple devices, help!

[Herminator]

Hey guys! 

I've got two keyboards, a Nord Electro 4d and a Roland Juno Di. I need to send program changes to both of them with set list maker.
It seems like all midi interfaces just has one midi out. What is the correct way of doing this?

Thank you

[arlo]

You can get a USB MIDI interface with multiple output ports, or you can chain your keyboards together if they have MIDI Thru ports.

Here's an example of a MIDI interface with 2 or 4 outputs:

http://amzn.to/2cX4y7L
http://amzn.to/2cFC16H

[Herminator]

So if I use a Roland UM-ONE mk2 with a M-Audio MIDISPORT 2x2, will I be able to split the midi signal when it comes to the M-audio so that I can send different program changes to the different keyboards?

[arlo]

If you had the Midisport 2x2 (or another multi-port interface), you wouldn't need the UM-ONE.

If you already have a UM-ONE (or another one-port interface), then you could just add a splitter to that:

https://amzn.to/2vbnCbs

The main functional difference between a one-port interface connected to a splitter versus a multiple-port interface is that with a multiple-port interface, you could have two devices using the same channel by putting them on different ports. One port is enough as long as you can set each device to use a different channel, and you have no more than 16 devices (because MIDI only supports 16 channels per port).