TP-Link TL-MR3220 Wireless N Router - 3G / 3.75G, 4x 10/100 LAN Ports, 1x 10/100 WAN Port, 1x USB 2.0 Port, 5dBi Omni directional Antennas at TigerDirect.com
OpenWRT and the Serial Console of the TL-MR3220 Router | hackup.net
MR3220 3G/3.75G Wireless Lite N Router User Manual TL-MR3220 User Guide_REV2 TP-Link Technologies
TP-Link TL-MR3220 3G/4G Wireless N Router 150 mBpS | eBay