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Powerline adapters expand your network by using your home wiring like an Ethernet cable, sending the Internet signal from your router to any active power outlet. This means you can use your adapter just like an extra Ethernet port, to connect wired devices without rewiring your home. The PLWK400 also functions as a wireless range extender, to increase wireless signal strength across your home network.

Technical Specs
  • Model Name:
    Linksys PLWK400
  • Network Standards:
    HomePlug AV, IEEE 801.11b/g/n, 802.3, 802.3u
  • Ports:
    Fast Ethernet (10/100)
  • LEDs:
    Powerline, Ethernet, Wireless, Wi-Fi Protected Setup, Power
  • Buttons:
    Wi-Fi Protected Setup, Easy Connect, Reset
  • Wireless Encryption:
    128-Bit AES Link Encryption
  • Power Input:
    100-240V AC, 50-60Hz
  • Operating Temperature:
    32 to 104F (0 to 40C)
  • Storage Temperature:
    -4 to 158F (-20 to 70C)
  • Operating Humidity:
    10 to 85% Noncondensing
Package Contents
  • Linksys Powerline HomePlug AV Adapter with Wi-Fi, PLW400
  • Linksys Powerline HomePlug AV Adapter, PLE400
  • CD with Setup Software and Resources
  • Quick Install Guide
  • 2 Ethernet Cables
Rated 5 out of 5 by from That was really easy!! Installed in a large home, with a single power supply. It does not matter if you have multiple pannels with many breakers on it. This system was installed in two outlets that do not connect to the same brakers or the same pannel. The breaker that matters is the one at the point of entry of the power line into the house. Instructions should be a bit more clear on that issue. It takes less than a minute for the units to communicate and setup is straightforward. In future updates of this product, the unit password should be located in the front of the unit. The signal strenght is exellent and speed is good enough to carry TV transmission on a tablet or netflix in high resolution.
Date published: 2013-03-15
Rated 1 out of 5 by from Dependant on house wiring Be careful of expecting too much from this product. Although the product itself may be well intended, if the wiring in your home has ANY issue, they will not work. I bought two sets o these and lost a great deal of money when I found out that the wiring in my home would not carry the data. My house is less than 4 years old as well. What DID work is a wireless signal booster on each floor, with the main router in the basement.
Date published: 2013-01-19
Rated 5 out of 5 by from home electrical service wiring problems The product is great, performs as advertised. The installation doc was a little misleading in the area of 'wall outlet' usage and here is what you need to know, the device uses the 'common' side of your home's electrical wiring so you can use any outlet in your home that is wired to the same service panel, the outlet does not have to be on the same circuit breaker. I got this info from 'live chat' on the website. Hope this helps.
Date published: 2013-12-29
Rated 5 out of 5 by from Solved my wireless problems! Even though we have an E4200 router upstairs, the signal is weak across the house, downstairs in the family room. This also gave us a way to enjoy wireless access in the basement now. Just an FYI: Follow the installation steps to the letter. I guess I wasn't paying attention, but when I did, the install went flawlessly. Plus, you have the added convenience, of having the Cisco Powerline Utility which allows remote access to both units. I recommend this to anyone who wants to expand the range of their wireless router.
Date published: 2012-12-08
Rated 3 out of 5 by from Good, but needs improvements This extender worked very well in improving the signal strength in other areas of my large home. My main problem with it, and the reason it doesn't get 5 stars, is not the wifi strength, but rather the lack of settings and management options. For example, I have a MAC address filter on my router, but when the signal is being picked up from the extender, the MAC address filter does not work on the extender. Aside from a password, there is basically no other method of protection against intrusion. Additionally, the management tool is lacking in options, some options don/t work, and it is not very user friendly. As soon as these issues are fixed, I;'ll be happy to return and give it 5 stars!
Date published: 2012-12-18
Rated 5 out of 5 by from Great performance, poor set up instructions This did exactly what I wanted. I just tested near the remote hot spot and got 42 D/ 32 U Mb/s [my FIOS is rated for 50/ 25]. They could have added one more page to the set up and it would have been simple. At the end of the installation, you are asked to sign onto the wi-fi server. It asks for a USER ID and Password - tried everything I could find. Called tech support. Leave USER ID blank Password: admin after that, it was easy!
Date published: 2013-08-13
Rated 4 out of 5 by from Works for Me I've had these for a year. In our "L" shaped brick rancher, they double my wi-fi coverage in the house. We had a very weak signal, because the router is in the office at one end of the house, and our living area is at the other end of the "L". Trying different plug locations in proximity to the router and receiving unit gets you the best signal possible. It works!!
Date published: 2015-07-29
Rated 2 out of 5 by from Confusing The first problem was loading the CD. It refused to load on Windows 8.1 which apparently is not supported by Linksys. The second problem was that it's not clear in the instructions that the two units have to be on the same circuit and share the same breaker. So, it kind of defeats my intention of extending the coverage of my Wifi. I got it up and working through trial and error, but now there's some sort of conflict with my Motorola SURFboard SBG 6580 cable modem. The modem shuts down every half hour or so when the Powerline units are plugged in.
Date published: 2014-12-14
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*The standard transmission rates—450 Mbps or 1300 Mbps (for 5 GHz), 300 Mbps (for 2.4 GHz), 54 Mbps, and 11 Mbps—are the physical data rates. Actual data throughput will be lower and may depend on the mix of wireless products used.
** Maximum performance for the Powerline AV Network Adapter is derived from HomePlug Powerline Alliance HomePlug AV specification. Performance depends on many factors, conditions and variables, including volume of network traffic, home wiring construction, operating system used, mix of networking products used, interference from other electrical devices, age of home wiring, wireline range and coverage as determined by wiring route or path between devices and other adverse conditions. Power outlets and electrical wiring must all be part of the same electrical system.