TP-Link AP Hardware version mismatch

Hey all,

I have a TP-Link EAP660-HD which has been serving me very well. I recently upgraded the FW on it, and after checking the back of the unit to see that it is a ver 1.6 (and downloading the appropriate 1.6 FW) I see in the dashboard that it says it is a HW version 1.0.

Is this expected? Pic