Grumble

The whole point of advertising usb hubs as "stackable" is that when you run out of ports on one, you come back to the store and purchase another of the same kind, and then, actually, stack them. The appeal of more expensive and more, shall we say, wierd-looking hubs is just in that: you can eventually build towers out of them....

This of course assumes that a year or so after the purchase of the first one, when you come to the store to buy the second... well, it will be there...