You can plug it into Ethernet or a 3G dongle. Share your bandwidth with any other router in range that implements OLPC's mesh-networking standard. The Open WRT software is designed to run on just about any hardware so you do not actually have to buy a Fonera to join the fun. The software is based on Open WRT, which in turn is based on the Linksys WRTG54G firmware which the community forced Cisco to open-source