TP-Link TL-WPA4221 KIT AV600 Powerline Wi-Fi Extender

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Product guide

TP-Link TL-WPA4221 KIT AV600 Powerline Wi-Fi Extender

AV600 Extender: The TP-Link TL-WPA4221 KIT is a powerline networking kit that carries a network connection over your home’s electrical wiring and adds Wi-Fi in a weaker-coverage area. Its listed rates are up to 600 Mbps over powerline and 300 Mbps over Wi-Fi, with two Fast Ethernet ports for wired devices.

At a glance

Uses existing household electrical wiring to extend network access, with no additional wiring or drilling claimed.
The listing claims up to 600 Mbps over powerline and 300 Mbps Wi-Fi. These are different connection rates, not a promise of delivered internet speed.
Two 100 Mbps Fast Ethernet ports are specified for wired devices.
A Wi-Fi button is claimed to copy the router’s network name and password, with subsequent setting changes syncing across the powerline network.

Price

£44.99Save 25%

Reference price: ~~£59.99~~

Price checked: 12 Nov 2026

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Often bought together

TP-Link TL-WPA4220 2-Port Add-On Powerline Adapter, Range Extender, Broadband/WiFi Extender, WiFi Booster/Hotspot, No Configuration Required, UK Plug

£35.99

Pros and cons

Pros

Powerline networking can provide a route to rooms where the router’s Wi-Fi is weak, without running new network cable.
Wi-Fi extension and two wired Ethernet connections are combined in the kit.
The stated one-touch Wi-Fi configuration can copy existing router credentials.

Cons

The wired ports are Fast Ethernet at 100 Mbps, which limits wired throughput below the listed 600 Mbps powerline rate.
Real-world speed depends on the electrical wiring and conditions between the adapters, so the headline rates should not be treated as guaranteed.

Technical specifications

16 specifications

Identity
Brand	TP-Link
Model	TL-WPA4221 KIT
Powerline standard	HomePlug AV2
Data link protocols	Ethernet, HomePlug AV2, IEEE 1901, IEEE 802.3, IEEE 802.3u
Listed data transfer rate	600 Megabits Per Second

Network features
Wi-Fi rate claimed	300Mbps
Ethernet port specification	100 Mbps Fast Ethernet
Powerline range claimed	300 meters / 1000 feet
Hardware interface	Ethernet
Compatible device	Router

Dimensions and installation
Dimensions listed	13.8L x 10.2W x 19.2H centimetres
Weight listed	0.21 Kilograms
Colour	white

Other listed details
Compatible operating system family	Windows
Minimum required operating system version	Mac OS 14 Sonoma
Warranty	3 year Manufacturer

What to know before buying

The stated 600 Mbps powerline rate, 300 Mbps Wi-Fi rate and 100 Mbps Fast Ethernet port rate describe separate links. The 300-meter powerline range is a manufacturer claim, not a guarantee of coverage or throughput in a particular home.

Listing details to confirm

The product title names TL-WPA4221 KIT, while the explicit box-contents list names TL-PA4010 and TL-WPA4220. The listing also describes two Ethernet ports and separately advertises two cables without a matching explicit box inventory. Confirm the selected kit and included cables before buying.

What’s in the box

Included

TL-PA4010
TL-WPA4220

Who is it for?

A good fit for

Homes where electrical wiring offers a practical way to extend network access to a garden room, office or other weak-Wi-Fi area.
Buyers who need Wi-Fi access plus wired connections for devices such as a television, PC or game console, and can work within 100 Mbps Fast Ethernet ports.

Less suited to

Anyone needing gigabit Ethernet or wired throughput above the stated 100 Mbps port rate.
Buyers who require a guaranteed internet speed or coverage distance without checking performance in their own wiring and layout.

TP-Link TL-WPA4221 KIT AV600 Powerline Wi-Fi Extender · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.3 / 5 · 20,595 ratings

5 stars66%66%
4 stars18%18%
3 stars8%8%
2 stars3%3%
1 star5%5%

Customer feedback highlights easy setup and reports of improved Wi-Fi reach, including in garden rooms and offices. Experiences are mixed on connection reliability and speed, with some reports of dropouts or very low throughput. This matters because the kit’s listed rates are maximum claims across separate powerline, Wi-Fi and Ethernet links, not guaranteed results in a particular home.

Positive themes

Customers report easy setup and improved Wi-Fi reach in parts of the home with weaker coverage.

Negative themes

Some customers report connection problems or say the device stops working after a few hours.

Mixed feedback

Reported speed varies, ranging from substantial improvement to very low throughput.

Frequently asked questions

What does the AV600 rating mean for this kit?

The listing gives a powerline data rate of up to 600 Mbps. It separately claims 300 Mbps Wi-Fi and specifies 100 Mbps Fast Ethernet ports, so these figures apply to different parts of the connection.

Can it extend Wi-Fi to a room with weak coverage?

That is its intended use. It sends network data over household electrical wiring and provides Wi-Fi from the extender, but actual results depend on the home’s wiring and layout.

How many Ethernet ports are specified?

The product feature details specify two 100 Mbps Fast Ethernet ports. The title’s “2+1” wording is not reconciled with that specification in the listing.

What is listed in the box?

The explicit contents field names a TL-PA4010 and a TL-WPA4220, which differ from the TL-WPA4221 KIT model in the title. Confirm the exact selected package before purchase.