Last year was my first year at CES. It’s also when I discovered that Las Vegas will milk you for every penny between your sofa’s pillows, which includes charging you not only for Internet access, but for any other computers added to the network in your hotel room. Enter the Buffalo Ethernet Hub. It’s powered by your computer’s USB port and can distribute your Internet connection to two connected computers. Sure, a switch or router could accomplish the same feat but not without an external power supply.
Note: Mac computers can share their Internet connection over WiFi and Ethernet.