Using USB PCMCIA Card versus USB Port

  • Thread starter Thread starter ido1957
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ido1957

ido1957

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I heard that to reduce popping/crackling in USB intefaces that you should use a USB PCMCIA Card versus the built-in USB Ports. This would apply to a laptop of course and I'm not sure about Desktops.

Has anyone ever heard this and does it have any merit?
 
Anyone suffer from pops/crackles from their USB Interface....
 
Pops and crackles are pretty common with USB interfaces, unfortunately. Most motherboard manufacturers put USB at a low priority IRQ, shared with devices that have high interrupt handler latency. The result is predictably bad. :)

Using a CardBus or ExpressCard USB card might help if it happens to end up on a low-use IRQ. That said, you're probably better off trying to fix the IRQ conflict by disabling unused ports (floppy, parallel, serial), adjusting the interrupt mappings, etc.
 
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