Ok i write minera from IMG to SD card and boot this card

Now i see minera panel on my IP

what next ?

Take your PC browser and input the Minera IP.

Ok I'm inside minera web panel.

How to add Antminer to this panel and manage it ?

Answer michelem, thanks !

What Antminer?

I was able to network scan and it found all of my L3+'s but the dashboard does not show any stats for them

Minera doens't support L3, D3 and S9 (this last one only if you change the miner to Cgminer)

How much would it cost to have it implemented?

I haven't much time by now and mainly I haven't a L3