Newegg offers the TP-LINK 802.11n N300 High Gain Wireless USB 2.0 Adapter, model no. TL-WN822N, for $19.99. Coupon code "EMCPGWW68" drops it to $14.99. With free shipping, that's tied with our mention from three weeks ago and the lowest total price we've seen for a new unit. (It's a current price low by $5.) It features dual 3dBi omni-directional antennas, a maximum data transfer rate of 300Mbps, and 64-bit/128-bit/152-bit WEP/WPA/WPA2/PSK support. Coupon expires March 17.