The new Wireless N USB Adapter from TRENDnet (TEW-684UB) is Dual Band and supports the latest 450Mbps technology. Its shape is very similar to the 450Mbps Gaming Adapter, also from TRENDnet, but its much smaller and does not require extra power, coming with USB connectivity.
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips