Using USB instead of TCP

HI All,
Recently, I have been using PXI for realtime data acquisition. I'm presently using PXI-8175 and find that there are USB ports available. What exactly are these ports for?
I am just wondering, if I can use USB for transfer of data from Labview to PXI instead of using TCP which would support high data transfer rate.
Can someone shed some light on this?
Aravind

I want to make sure to clarify this point. USB is a serial
communication method talking to many devices which has an inherent
large amount of jitter and communication overhead. Doing USB communication
adds to the jitter of the system which is a bad thing for RT systems. This is the
reason we recommend using TCP/IP for your RT communication.
As to your question of why we have the USB ports on the controller, they are used for the Windows variants of our PXI embedded controllers. You'll notice that most of our PXI controller offerings have both a Windows XP and LabVIEW RT variant.
Hope this helps,
-Adam

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KevinD wrote:
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