Hello, I have a question about PC requirements, the 4000 series scopes list usb 3.0. I understand that 3.0 is much faster data transfer than 2.0 but does that mean it won't work on a laptop that has only usb 2.0 ports at all? All of my computers have only 2.0 so I am trying to determine if I need to factor in price of new laptop along with a Picoscope purchase.

The 4425 works with USB 2.0.  In fact, at this time, there is no difference in performance using USB 2.0 or 3.0.

It is possible in a future software upgrade that 3.0 will provide a performance benefit but right now it does not.

You can see our kit choices here:

http://www.autonerdz.com/picoquad4425.htm

And a comparison table here:

http://www.autonerdz.com/4425%20Comparison%20table.html

Finding a better value on a PicoScope kit is a mission impossible:

http://www.autonerdz.com/cgi/yabb2/YaBB.pl?num=1423606866

Thanks Tom, that's what I was hoping to hear!