@Boihh Only TP-Link themselves will know why. Personally, I guess that this is a marketing decision. I think the Archer AX53 is currently the lowest-priced model that supports DFS....

@_sanket_ Hi, According to the list in the first post of this thread https://community.tp-link.com/en/home/forum/topic/593722 it has been supported since firmware version 1.3.8.

@HugoMiguel Hi, This was answered very recently by TP-Link in the "Adapters" forum. https://community.tp-link.com/en/home/forum/topic/808132

@Ihill The lower two LEDs on the device itself only indicate whether there is a connection or no connection at all. To see whether the signal of one or both bands is "weak" or "good" you have to look...

@Ihill Normally, that red LED should be linked with the signal indication for the wireless link between the router and the extender. It is enough if one of the two bands is "weak" for the LED to turn...

@Ihill Hi, You can download the complete User Guide of the RE705X from the product webpage for the RE705X. Anyway: