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running out of usb ports. pci card add on?

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DaveMMR:

It was so long ago I can't remember the exact details but I do remember having control and LED-Wiz issues using a hub that were solved with a PCI card.  That was close to 10 years ago so it may be a non-issue now. But since then, I've always leaned toward cards myself.

dkersten:

I remember reading that the ipac ultimate, which has some 96 outputs and something like 42 inputs doesn't have any problems with multiple keys being pressed at once because it is on usb 2.0 and the bandwidth is more than enough.  But since I don't know the requirements of multiple HID devices, I just wouldn't put more than a few on one single line (ie on a hub).  However, using different controllers that will not be used simultaneously shouldn't be an issue I would imagine, even if bandwidth or interrupts are a potential problem.

I would also suggest using usb 3.0 ports with a hub, but then I have had issues with usb keyboards on 3.0 ports.. So maybe not a great idea for other HID devices.. ?

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