Installed 2 of those this week for my customer.
Have to go by memory since they are at least 50km away from where I am now
The lights with the horizontal stripes correspond to eth-ports 1-5.
The blue light in the middle is the WPS button (which I think you can not put out but you can disable the use of that button)
A bit more to the right is (as far as I understood) also network activity (redundant with eth1-5 ?? Not clear)
Far right is wireless connection.
To be honest, I put those 2 devices each time in a cabinet so I was not really concerned with the leds doing whatever they were doing