Took and suggestion here and now have a Koutech Systems IO-P222 USB 2.0 I/O
card. It is PCI. Choice was driven because this card has the pair of
"m/b-like" pins
so I can enable 2 of the 4 case mounted USB ports. Yes, this card also has 2
type-A USB ports pointing out the back also. The m/b has 2 type-A USB ports
also, but has zero extra m/b USB pins. The m/b is really OLD!
Question: Does a separate USB controller card require an IRQ for each of its'
ports?
It seems to grab an IRQ on each of the 4 PIRQ lines of the m/b no matter
which
PCI slot I place it in! So, I assume this is normal.
If this is true, I'll keep playing card shuffle.............. :)
trying to keep the USB controller from sharing an IRQ with the Video card and
NIC card. So far, it looks like a no-go with 3 cards, 4 PIRQ lines, and, 5
PCI
slots.
Have not found a pleasant segregation yet. Plus, the explanation in the
m/b's user manual (abit bx6r2.0-440BX) makes little sense.
Best,
Duncan
