newegg offers the factory-refurbished TP-LINK 802.11n Wireless USB 2.0 Adapter, model no. TL-WN822N, for $14.99. This $10 mail-in rebate cuts it to $4.99. With free shipping, that's $15 under the lowest total price we could find for a new unit. It features dual 3dBi omni-directional antennas, a maximum data transfer rate of 300Mbps, 64-bit/128-bit/152-bit WEP/WPA/WPA2/PSK support, and more. Rebate expires May 2. A 1-year TP-LINK warranty applies.