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The Good The ZyXel PLA4231 500 Mbps Powerline Wireless N Extender is a two-port power-line adapter with built-in Wi-Fi and hence extends a home network for both wired and wireless clients. The Bad The ZyXel PLA4231 doesn't support Gigabit Ethernet or dual-band Wi-Fi, and, without a required second power-line adapter, it's rather expensive. The Bottom Line Current power-line users with large homes will benefit from the ZyXel PLA4231's network extension capabilities; however, there are alternatives that offer similar benefits for less. Visit for details. If you want to extend your Wi-Fi network to the far end of a large home, the best way is to run a network cable there and connect it to another access point (or Wi-Fi router). But running network cables in an aesthetically pleasing way is a challenge, so the second-best way is to get a pair of power-line adapters, such as the recently reviewed Actiontec PWR511K01, and another access point. Or you can get the ZyXel PLA4231 500 Mbps Powerline Wireless N Extender.

The ZyXel PLA4231 is basically a two-port power-line adapter that comes with a built-in Wi-Fi access point. This means apart from being able to host two other wired network devices in some remote part of your house, it can also create a new Wi-Fi network there for wireless clients. Per the standard, the ZyXel PLA4231 should provide data speeds of up to 500Mbps. In reality its speed is, unfortunately, much lower than that, both for wired and wireless clients, due to the lack of Gigabit Ethernet and dual-band Wi-Fi support. To add injury to the insult, at a street price of around $120, without a second power-line adapter included, the ZyXel PLA4231 is not cheap. If your home network is already power line-ready, the ZyXel PLA4231 is a decent addition thanks to its two network ports and built-in Wi-Fi.

First-time power-line buyers, however, will find it a better deal to get an Actiontec PWR511K01 kit, which costs just $50, and a separate budget Wi-Fi router or an access point. Design and features The ZyXel PLA4231 is not the first power-line Wi-Fi extender kit I've seen. A couple of years ago I reviewed the, which offered a similar feature.

The Netgear, however, supported only the HomePlug AV Powerline standard, which caps at just 200Mbps, while the ZyXel PLA4231 supports the standard (also known as Powerline AV 500), which offers up to 500Mbps. The ZyXel PLA4231 has two network ports to host two wired devices at the far end of a power-line connection. Dong Ngo/CNET In reality, however, the ZyXel PLA4231 is not much faster than the older Netgear XAVNB2001 because its network ports are regular Ethernet, which is capped at 100Mbps. This means that at most a wired connection using it will have a speed of 100Mbps, not 500Mbps.

The situation would improve a great deal if the PLA4231 supported Gigabit Ethernet, instead. In its defense, the Actiontec PWR511K01 doesn't support Gigabit Ethernet either. The ZyXel PLA4231's built-in Wi-Fi supports the 300Mbps dual-stream single-band 802.11n standard and works only in the 2.4GHz frequency. For this reason, the real-world output speed is also much lower than 300Mbps. I wish it supported dual-band to also offer a Wi-Fi signal on the faster 5GHz band.