@TP-Link Thanks for the clarification. So in this case, I can add 1 M4 (as primary, connected to ISP modem) and use the existing 3 E4 (as satellite units)? so i can utilize my new 300 mbps internet...

@TP-Link Same issue here. I'm a Deco E4 user cannot update/disable QOS and already using the latest firmware/Deco mobile apps. I need to utilized my bandwidth upgrade from previously 100mbps to...

I'm trying to disable my Deco app QOS but no option and the maximum bandwidth is only 0.01~100mbps. Got a recent upgrade from my ISP at 300mbps and trying to update the QOS settings but cannot do so....