b standard

This is truly a "no brainer" product. It will perform exactly as advertised. My wife runs a business next to our house and the signal from our router was always poor, so I purchased this to increase the signal. The only down side to this product is that it will only work with the "g" type routers. So I had to upgrade to a WRT54g from the BEFW11s4. Note: It will work with your "b" type adapters, but your speed will be limited by your adapters. It has been my experience that Linksys works best with other Linksys, so I recommend using all Linksys for your network. The WRT54g is an excellent router, it has more features and so far is more stable than my old router. Use a laptop to locate the edge of your signal area and place the expander just with in it. It has an "auto configuration" button. Then you can use the browser utility to configure it. You will get roughly double your routers range. If you need more range buy it!

It does not work with WEP contradictory to the claims by Linksys and set-up instructions.

I had great difficulty setting up the unit. Even after disabling WEP and MAC filtering, configuring the unit to use WEP was annoying. Since you must setup the unit wirelessly (no ethernet connection is available) whatever wireless connection you are using to setup the unit must not be in range of any other wireless domain but your own. Whenever I tried to configure the unit using my wpc54g equiped laptop, my laptop would loose the original wireless connection to my network and connect to my neighbors wireless router instead of the wre54g. Once I got the unit configured it would work OK to extend the network, but would cause my wga54g to lockup after a few minutes, requiring a reboot of the wga54g and my XBOX. After two frustrating days I finally gave up and returned the unit. Oh well.