Really, really good MIDI interface.
Although I had some problems with the software editor, I think this interface/splitter/merger/patchbay is the best value option out there. You get 10 standard DIN ports (10 out, 10 in), 16 ports from the computer, 16 from the other computer (it can have 2 computers hooked up to it at once!), 10 ports through USB and 4 ports through LAN. It's unbelievable. I use it to route all the MIDI messages in my studio.