Now in stock at Rokland- the Alfa AWUS036NHA, a high speed Wi-Fi USB adapter featuring the Atheros AR9271 chipset with Atheros Align® technology. AWUS036NHA offers better true throughput to your ISP compared to other Wi-Fi USB adapters. It is perfect for video streaming, large downloads, and online gaming.
More from the manufacturer:
"Atheros Align® technology leverages the 802.11n 1–stream
specification to provide the optimal upgrade path from legacy 802.11
solutions. The single-stream feature enables a new class of Wi-Fi
devices that deliver performance enhancements over the existing 802.11g
technology, at comparable price points. Align® solutions are forward
compatible to higher-performance, multi-stream, MIMO–based 802.11n, and
are available in reference designs to serve the networking, PC and
consumer electronics markets. The enhanced throughput of Align 1–stream
solutions improves network efficiency by occupying the wireless channel
for shorter periods than slower 11g devices – reducing congestion and
increasing capacity for additional wireless devices."
Alfa AWUS036NHA is now in stock and available for immediate shipment. It comes with a 5 dBi gain external antenna, USB cable, and driver CD. It is compatible with Windows XP, Vista, and Windows 7.
Military and First Responder 
I’m a beginner. Are there instructions step by step how to configure my Alfa awus036nha USB adapter for SSID , Authentication , etc with my home router?