Berton said:
I use PCIe X1 and X4 Add-in cards to gain additional USB 3 ports or to gain USB 3 ports where none exist. There are also some available for the older PCI slots. Some examples:
https://www.amazon.com/usb-3-0-pcie-...+3.0+pcie+card
I have used all my pci-e sockets! Thanks!

- - - Updated - - -

MaloK said:
While USB is a beautiful thing I tend to keep it with as less hubs than I can. And never even tried to stack them.
I agree, I wouldn't stack them either, I only intend to use one!

- - - Updated - - -

spunk said:
Nice!
this looks a lot more sturdy and it's from a known company.
thanks!