There are two ways to find the revision and product identifier of the Xplained Pro boards: either through Atmel Studio or by looking at the sticker on the bottom side of the PCB.
When a module Xplained Pro board is connected to a computer with Atmel Studio running, an information window with the serial number displays. The first six digits of the serial number contain the product identifier and revision. Information about connected Xplained Pro extension boards also displays in the window.
The same information can be found on the sticker on the bottom side of the PCB. Most kits have stickers that have the identifier and revision printed in plain text as A09-nnnn/rr. Boards with limited space have a sticker with only a data matrix code, which contains a serial number string.
The serial number string has the following format:
"nnnnrrssssssssss"
n = product identifier
r = revision
s = serial number