This is a terrific product. My urban flat is long and narrow & I needed to extend my network from the back bedroom (location of my cable modem & wireless router) to the front room media center. My current 802.11g signal only reaches about half-way, and I wanted an solution that was reliable, secure and offered enough bandwidth to stream music & rapidly transfer big media files.
These little babies did the trick right out of the box. Plug each (you must purchase at least 2; see below) into a power outlet, connect one to your existing modem/router/switch via ethernet cable, and the other becomes a four-port network access point. I can't imagine a more fool-proof setup -- literally plug-and-play!
Now, I'm not sure that I believe the advertised 85Mbps transfer rate. I've done some testing with big files and find my rates are less than half this. Even so, that is fast enough for my needs and - unlike my wireless access - these have proven 100% reliable so far with a network connection that is always "up".
A few nit-picks just to give the Netgear guys something to work on: it's odd that only single-unit packages are offered, given that at least two units are needed to build a bridge. Why not offer a 2-pack starter kit like with the XE102? (ideally at something less than 2x the current price...) Also, if your home is like mine, wall outlets are precious things. It would have been great if units had been designed with a pass-through power outlet to accommodate the powerstrip plug that inevitably got displaced.
Still, these are small quibbles. I highly recommend this product to anyone looking to reliably extend a broadband network without amping-up a wireless signal for the whole neighborhood to see.