Yep, that's the HF DC I was talking about. As far as number of ports, you could have as many as you want. Just use gates to block off the ports you don't need at the time. I have 4 hooked up to my DC, but only just 1 or 2 at a time. They have them at HF (http://www.harborfreight.com/4-inch-...rol-97497.html) but I used the ones at rockler because they can be screwed down making them easier to use (http://www.rockler.com/product.cfm?p...0&site=ROCKLER)

I have a hose running from the DC up to the ceiling, and then branches off of that.