I have now had 4 of these devices fail with the "no lights" problem - i.e. not even the power light shows when you plug them in and the reset/link button doesn't do anything to change this.

I have quite a few TP-Link devices including older and slower adapters.  I bought the first 2 of these AV1300 adapters as a kit in 2020 and one of the pair failed with the "no lights" problem while still under warranty.  I sent it back and TP-Link replaced it sending me 2 new units.  The second of my original pair then failed so I was able to replace it straight away with the 2nd adapter TP-Link had already sent me.

Today both these new adapters failed - again with the "no lights" problem.  I have no idea why they failed but suspect it may possibly be due to a spike on the power circuit (lightning?).  However, no other devices in my house (e.g. routers, wifi extenders etc.) were affected.  All my older TP-Link adapters were unaffected.

I contacted TP-Link today but was told that because the original AV-1300 units were purchased in 2020 they were out of their warranty period even though the replacement units they had supplied were only 2 years old.

I appreciate this is in line with the warranty conditions but thought others might wish to be aware of my experience.