The hub looks very nice. It fits perfectly under a Mac mini. However, if you have a new Intel Core2Duo Mac mini, then the cables in the box do not allow you to connect the hub: they are too short. Obviously the position of the Firewire and USB ports had changed from an earlier Mac mini version. I assume that G4 Mac minis should work with these cables.
Also: If you need two Firewire ports permanently, then you should consider a different hub. This hub has one FW port at its back and one at its front. Since you lose the Mac mini firewire port (to connect the hub) you will be left with as many firewire ports on the back of the system as before: 1. You gain one additional port at the front, but I assume this is rather for connecting digital video cameras. Having a cable attached to the front permanently doesn't look great.