The revision and product identifier of the AVR-IoT Wx boards can be found in two ways: Either by utilizing the Atmel Studio/MPLAB X IDE Kit Window or by looking at the sticker on the bottom side of the PCB.
By connecting an AVR-IoT Wx to a computer with Atmel Studio/MPLAB X IDE running, the Kit Window will pop up. The first six digits of the serial number, which is listed under kit information, contain the product identifier and revision.
The same information can be found on the sticker on the bottom side of the PCB. Most boards will have the identifier and revision printed in plain text as A09-nnnn\rr, where “nnnn” is the identifier, and “rr” is the revision. Boards with limited space have a sticker with only a data matrix code, containing the product identifier, revision, and serial number.
The serial number string has the following format:
"nnnnrrssssssssss"
n = product identifier
r = revision
s = serial number
The product identifier for AVR-IoT WG is A09-3203.
The product identifier for AVR-IoT WA is A09-3349.