For the most part, you probably don't need to connect it to your computer. The connector is designed for direct interface with your equipment via a rear port interface, not your computer from what I've seen.
You can see what I'm talking about here http://www.joemeek.com/pdf/mq1quickstart.pdf
Also, I've found a number of these units of MQ1
's (Discontinued Stock) for anyone interested since they're discontinued, but still the best optical compressor at this price point to be found. A google search should turn them up quickly at $129 down from list of $249.