Rank #2 in Best Powerline Adapter 2026: The Name Is Six Times the Speed
TP-Link TL-WPA4221 KIT AV600 Powerline WiFi Extender Kit, 300Mbps
Price and rating as shown on Amazon when we collected them. Both change.
The TP-Link AV600 Wi-Fi extender kit costs £45.21 and is rated 4.3 stars from 20,600 ratings, with a 600Mbps powerline link and a 300Mbps wireless access point.
It takes second because it has the largest sample in this ranking and solves the problem it is bought for, while its name states twice the speed its own Wi-Fi half provides.
How those 20,600 ratings break down
An average hides its own shape. This is the spread behind the 4.3 stars.
Specification
Exactly as published on the Amazon listing, field for field.
| Name versus Wi-Fi | AV600, with 300Mbps wireless |
|---|---|
| Ratings | 4.3 from 20,600 |
| Range | Up to 300 metres of wiring |
| Function | Powerline backhaul plus an access point |
| Weight | 210 g |
| Price | £45.21 |
What buyers actually say
Quoted from customer reviews on Amazon
Verified purchase“Cured bad wifi throughout upstairs area. Replaced a TP-Link RE330 AC1200 WiFi Extender Booster .”
Verified purchase“Absolutely brilliant. Had an area that couldn’t get a signal. Easy to set up and pair. Perfect reception now. Hopefully will continue.”
What it is up against
The rivals it was ranked against in Best Powerline Adapter 2026: The Name Is Six Times the Speed.
Rank #1
TP-Link TL-PA4010 KIT AV600 Powerline Adapter Starter Kit
£37.99
Rank #3
TP-Link TL-PA4010PKIT AV600 Passthrough Powerline Adapter, 299g
£40.99
Rank #4
TP-Link PG2400PKIT G.hn 2400 Passthrough Powerline Adapter Kit, 784g
£79.99
Rank #5
TP-Link TL-PA717 KIT 1-Port Gigabit Powerline Adapter Starter Kit, 370g
£44.99
Questions people ask
Is the Wi-Fi 600Mbps?
No: 300Mbps, stated on the same page.
What is 600Mbps then?
The powerline link between the two adapters.
How far does it reach?
Up to 300 metres of existing electrical wiring.
Will it fix a dead spot?
Yes, because the access point can sit where the socket is.
Why is it second?
Because it is the most-reviewed kit here and the one that solves the real problem.
How many ratings does it have?
20600 at the time of collection, averaging 4.3 stars, with 66 per cent five-star and 5 per cent one-star.
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