Question : What does the Intel ICH9 USB - 2938 driver do.  Can it be deleted? -  AND - about IRQ rearranging.

Hello,

I am getting crackling from my M-Audio Delta 1010LT PCI soundcard. (XP Pro SP3)
This comes when playing many midi notes thru the GigaStudio3 sampler program.

I believe it might be an IRQ problem as my IRQ 21 shares this card with:
Intel ICH9 Family USB Universal Host Controller - 2938.

What does this ICH9 - #2938 do and could I delete it?
Or reduce the time it is polled?

-ALSO please - : does IRQ 21 mean it gets the least priority?  If so, how can I move it up?

I have a DFI Lanparty DK X48-T2RS motherboard.  I'm using PCI slot #1 of 3.
There seems to be some items in the BIOS about PCI slots being auto(ESCD) or manual and about specific IRQ #s being assigned.  

I fiddled with this a bit but could didn't see any rearranging of IRQ #s.

I'm going nuts with this and could really use some help.
Thanks  . . . Dave

Answer : What does the Intel ICH9 USB - 2938 driver do.  Can it be deleted? -  AND - about IRQ rearranging.

Sounds like an issue with the application. I hope they are able to help you out with it.