Will 800 MHZ Quicksilver USB port read a 2.0 USB Lacie Hard Drive?

Hello everyone
I have an 800 MHZ Quicksilver, and was wondering if it can read (adequately), either a USB 2.0, or Fire Wire conected Lacie external Hard Drive?
I'm going to install the 1.2 Upgrade Processor:
http://eshop.macsales.com/item/Seagate/ST3400620AS/
But I don't think this upgrade effects the speed of the USB Ports?
I also installed a Multiport Fire Wire PCI card, but through this card, I get latency problems in regard to audio. It's not as fast as the built-in Fire Wire Port.
Thanx
Mike

Hello Allan
Thanx for the tip
Do you have the same system that I have?
Is this your card:
http://www.sonnettech.com/product/allegro_usb2.html
If so, it seems to actually make up for (adjust or boost), the system's USB speed capability
And maybe I should pick up one of these too?
http://store1.sonnettech.com/productinfo.php?cPath=51_53&productsid=54&osCsid=e31aa1712e517d38996a3bcd302d6186
Thanx
Mike

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