I had that same congestion issue Gordon and solved it with the hub I showed in this thread.
Thank you so much for posting that.
It reminded me that I felt that I would put a PCIe USB hub into my new music PC, but I'd been coming around to using a 1U fanless unit with a very moderate CPU, rather than the 2U (probably) housing I'd originally planned. But I can't put both a PCIe USB hub and a PCIe firewire card in the fanless 1U housing. You just stopped me doing something dumb.