Does the NI USB-6251 require USB 2.0 port?

[bdb2006]

I was wondering if anyone can let me know if the USB-6251 requires a USB 2.0 or will run it on a USB 1.0 also.

If so, will running it through a USB 1.0 affect performance? I have not found any related information in the user manuals.

bdb

[jasonv]

The USB-6251 can run using USB 1.1, but performance of buffered operations will be decreased.

[bdb2006]

Thanks for the info. 

bdb

[NIquist]

This is from notes in the manual:

3

If you are using a USB M Series device in full-speed mode, device performance will be lower and you will not be able to

achieve maximum sampling/update rates.

4

Operating on a full-speed bus may result in lower high-speed full-speed performance.

I doesn't give specifics on how much performance will be lost.  I suspect that depends on your PC and other USB items that are connected.