[Discuss-gnuradio] differences between USRP2 rev 3 and rev 4 boards

[Steve Mcmahon]

I am wondering what are the differences between the USRP2 rev 3 board and the 
rev 4 board?

I have one of each (one I ordered maybe a year ago and one I ordered this past 
summer), and I don't see any differences on the board itself. I understand that 
the versions of the FPGA image and the firmware that shipped on the SD card 
from the factory would be different, since over a year of time elapsed between 
my purchasing the two boards. But what else is different? I can't find a 
changelog for the USRP2 boards anywhere.

Thanks for your help everyone.

Steve McMahon