Is their a KVM-like switch or "box" that allows you to use a Mackie Control Universal with two PCs so you don't have to plug and unplug one Mackie to use it with two PCs?
It is also not too hard to build a passive A/B midi switch with radio shack parts.
All you need to do is switch the signal on pin #5, all the rest can be daisychained.
**I put up a little diagram for you here:
ftp://shell.dimensional.com/users/musicvid/pub/images/ScanImage01.pdf