Hi Ron, Yes, there are two type of boards in a few models of Ubiquiti. They are distinguished as: - XM - the older version and the type supported by our current firmware
- XW - the newer version which they began manufacturing around 1/1/2014
I have had success in asking the distributor, before placing my order, to check the manufacture date... which is clearly listed on the box external label, to ensure it's prior to the beginning of 2014. Andre, K6AH
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