Hi @BelowAverage, Did you compare the trunk ports (uplink from the switch/downlink from the router) for the working/non-working switches? VLAN 101 is probably not tagged on one or both ends of the...

@SimonC., I was specifically thinking the "HD" models might omit DFS channels as they seem to be intended to be used in public areas with a lot of users. Is swapping the HD APs for a standard variant...

Hi @SimonC., It doesn't appear that the US model supports the DFS channels and I think Canada is more aligned to the US when it comes to the wifi regs. Pure speculation on my part, but I think the...

Hi @itm60, Make sure the switch is in a ventilated environment and surrounding environment is within the switches operation temp range. Unplug switch for 5 minutes. Unplug everything except one...

Hi @mohamed-atef, Search for the model on the TP-Lnk site for your region. Go to the support page and specify the version. Then click Downloads tab. On desktops, you can use a filter to only show...

Hi @SelfhostedGuy, Could be flow control related. Try different setting to see if they will work.