@Eddie_Can-Bra 

We cannot provide such a list because the answer is any switch.  Not just TP-Link but any manufactures switch, though I do recommend an unmanaged switch like the TL-SG108.  Each Deco unit is a router in of it self and Ethernet backhaul is automatic when connecting 1 Deco to another, wether that be through the Deco's Ethernet switch port or through a switch.  For best results connect the switch to the open Ethernet port (the one not connected to the modem) on the Base/Main Deco, and connect the other Deco units to that via Ethernet .  

  @Carl 

Hello Carl,

Thank you so much for your prompt reply. Could I bother you with a final question, same subject?

I have 4 D-LINK DES-1008A switches, unmanaged.Want to make sure what could still be wrong, which makes the satellite DECO X60 to crash every X-minutes.

Here is my connection layout attached:

  @Carl I have connected the main DECO X60 to my D-LINK switch. D-LINK switch connected to the main DECO X60 made the ethernet and Wi-Fi network crash (the one coming from the DECO X60!). Why is that?

  @Eddie_Can-Bra 

I saw your other post where you mentioned we talked about a known issue with some DLink Switches.  To be honest i was not aware of such issues although that sometimes doesn't trickle down to the US local team as primary support is at the HelpDesk.  I will need to take this information to my local QA team and see if they can help.  Please give me some time to get you a response.