On Jan 22, 2012, at 9:27 PM, Harry Jacobson-Beyer <[email protected]> wrote:

> Don't know what they are. Will you elucidate? 

Several companies such as Netgear and Trendnet make adapters you can plug into 
standard wall power outlets so the power lines behind your walls carry 
Ethernet. This lets you get wired network connections into every room where 
there's a power outlet. 




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