@The-Burro_1. 

 

If you are looking for a switch to connect to your Deco, you can go for either the TL-SG1008D or the TL-SG108. Those are 8 port switches so after wiring one to the Deco you will have 7 available.

 

If you use the Deco in Access Point mode it does disable most features, but the mesh network or having just one network you connect to still works. Here is a FAQ about AP Mode: https://www.tp-link.com/us/support/faq/1842/

 

You should be able to have the Deco in router mode, while connected to another router.

 

If the spectrum device you are using is a all in one or is a modem and a router, you can check with the ISP if it is possible to disable the "router" aspect of the device so it is just a modem, and it will pass the internet connect directly to the Deco. I'd say if you notice your speed is not performing up to par, this may be one of the variables to look at.

would be the wrong idea to boost up your internet speed, using the router mesh! The router mesh is good for dead spots, but not for the speed. You wouldn’t get 400 mbps on the wireless router mesh unless you connect them with wired Ethernet cable in a daisy chain configuration. Maximum speed out of 400 mbps, you’ll get approximately 220 mbps. The only time you can get up to that speed with Deco M9 plus, if you disconnect the other two access points and just leave the main router that is directly connected to the modem, then connect to the router’s 5 ghz channel. Otherwise you won’t get the full speed, while all three routers are connected. You should have bought the TP-Link Archer AX11000 Tri-Band Wi-Fi 6 Router, with $100 off promo. In the end, I’ll tell you what, the router mesh is not doing any good, because as the assess points extend their range farther from the main router, the speed drops down to the same speed as if you had a single router. Up closer to the router you’ll have a higher speed and farther from the router lower speed. This theory is evident in the case of both. Single router and router/WiFi mesh. Only in the case of the single router the speed reduces gradually, as you move farther from the router, while in the case of the WiFi mesh the speed reduces abruptly, as you are moving away from the main router, because the access point picks up the signal as you are moving closer to the access point. Also your client devices connect seamlessly.