Meritline offers the Airlink101 802.11n Wireless Mini USB 2.0 Adapter, model no. AWLL6075, for $15.99. Coupon code "MLCK7P18NL1" cuts it to $9.49. With free shipping, that's tied with our June mention and the lowest total price we could find by $5. It's compatible with PCs and Intel-based Macs, and features a maximum data transfer rate of 300Mbps and WEP, WPA2, and WPA-PSK encryption.