Alfa Networks manufactures the most popular and longest range WiFi product on the market- the AWUS036H 500mW 802.11g wireless USB adapter. Back in March they launched the 802.11n version, the AWUS050NH, to very good reviews. There was some discussion thereafter that while the AWUS050NH worked extremely well with 802.11n routers, the performance with 802.11g routers could be a little better. In June, Alfa discontinued the model in favor of a version 2 of the same model number, to be shipped to distributors instead. The new version has hit some setbacks and is not set to be ready for release until sometime in July.
If you are in the market for this model adapter, it is our understanding direct from Alfa that no retailers have the version 2 unit for sale right now. Alfa did ship a handful of test units to retailers (we did get some and all are gone). Some retailers still have a stock of the version 1 available. The version 1 works very well and is worth buying, but Alfa is touting improved 802.11g functionality on the version 2 model.