Like every other website on the planet, SmallNetBuilder uses cookies. Our cookies track login status, but we only allow admins to log in anyway, so those don't apply to you. Any other cookies you pick up during your visit come from advertisers, which we don't control.
If you continue to use the site, you agree to tolerate our use of cookies. Thank you!

Router Charts

Click for Router Charts

Router Ranker

Click for Router Ranker

NAS Charts

Click for NAS Charts

NAS Ranker

Click for NAS Ranker

More Tools

Click for More Tools

LAN & WAN Reviews

Powerline 1200 AV2 Adapter Kit with Built-in Outlet
At a glanceAV2-MIMO Powerline Performance
September 2015
ProductTRENDnet Powerline 1200 AV2 Adapter Kit with Built-in Outlet (TPL-421E2K)   [Website]
SummaryHomePlug AV2-MIMO adapter based on Qualcomm's QCA7500 chipset with filtered pass-through outlet
Pros• Can provide >450 Mbps throughput with single traffic source
• Doesn't block second outlet
• Reacts quickly to line noise changes
Cons• Throughput falls off very quickly with distance

Typical Price: $70  Buy From Amazon

Introduction

For those disappointed by TRENDnet's TPL-421E2K first HomePlug AV2 MIMO adapter kit [reviewed], redemption is at hand. To cut to the chase, the TPL-421E2K Powerline 1200 AV2 Adapter Kit with Built-in Outlet has the performance the TPL-420E2K should have had, and it's only around $10 more for the kit of two. You can also buy individual TPL-421E adapters, but at around $55 a pop, you'll pay a premium.

TRENDnet TPL-421E in use

TRENDnet TPL-421E in use

The TPL-421E is fairly large as powerline adapters go. At 61 x 123 x 65 mm (2.4 x 4.8 x 2.6 in.), it's sized more like NETGEAR's PL1200 / PLP1200 than its smaller TPL-420E no-outlet sibling.

TRENDnet TPL-420E,  TPL-421E & NETGEAR PLP1200 plugged in

TRENDnet TPL-420E, TPL-421E & NETGEAR PLP1200 plugged in

As large as it is, the 421E won't block the second outlet in a U.S. grounded duplex.

TRENDnet TPL-421E plugged in

TRENDnet TPL-421E plugged in

The callout diagram below shows the adapter supports tri-color HomePlug link quality indication. The single Gigabit Ethernet port is on the bottom side of the adapter, with the Sync button and reset button hole next to it.

TRENDnet TPL-421E callouts

TRENDnet TPL-421E callouts

The User Guide says the adapter goes into power-saving mode "when there is no network traffic for more than 10~20 minutes". I found it was more like three minutes for power save to kick in. This was tested via the following procedure, which ran without a hitch.

  1. Plugged in two adapters, let them link up and started a long ping from the HomePlug connected machine to another machine on my Ethernet LAN.
  2. Unplugged the cable connecting one adapter to my LAN switch. Verified that ping showed no response.
  3. Waited until the Ethernet-unplugged adapter entered power-save.
  4. Plugged Ethernet back in and verified the adapter powered up and ping returns resumed within a few seconds.

More LAN & WAN

Wi-Fi System Tools
Check out our Wi-Fi System Charts, Ranker and Finder!

Support Us!

If you like what we do and want to thank us, just buy something on Amazon. We'll get a small commission on anything you buy. Thanks!

Over In The Forums

Hello all,I have an RT-AC68U where I have setup an OpenVPN server. The problem is now, I have a set of IPs from outside trying to connect (obviously n...
I'm having a reoccurring issue where wireless devices are being assigned a wrong IP/DNS address. Wireless devices still connect to the 2.4 or the 5ghz...
Netgear just released 1.0.2.60 No idea if it fixes the issues related to 1.0.2.58. https://kb.netgear.com/000060335/R7800-Firmware-Version-1-0-2-60
A few months back I installed 2 MoCA devices (Actiontec Bonded MoCA 2.0 Ethernet to Coax Adapter) in order to get internet speed through my coax cable...
Hi i am facing a problem where i have a drive formatted with 2 partition Partition 1 - ext2 (Name - Disk) mounts as normalPartition 2 - NTFS(Name - Pe...

Don't Miss These

  • 1
  • 2
  • 3