I specifically bought the Deco for the mesh coverage and the Access control to allow only certain MAC Addresses that was described in its capabilites.  I bought it through Amazon.  I tried updating the version when I couldn't find the Access Control menu that all of the manuals claimed was there and reaching out to TP-Link. When I finally got a response from TP-Link, I found out that only version 1 has Access Control and it was too late to return the system.  TP-Link's site makes no mention of this difference and when you buy the units, it doesn't tell you what version you are getting.  The tech who finally explained the difference said they couldn't take them back, discount them, or anything.  No sorry, nothing.  They told me to go back to Amazon, which I said above, was too late.  They now sit on my system and I am not using them for much.  I have used TP-Link over the years, but I am very disappointed and will likely never buy their products ever again,