Newegg offers the D-Link N900 802.11n Wireless USB Dual Band Wireless Network Adapter, model no. DWA-162, for $48.99. Coupon code "EMCAKNP78" cuts it to $29.99. With free shipping, that's the lowest total price we could find by $10. It features WPS, WPA, and WPA2 security. Deal ends January 29.