The Basic Postage Stamp. If you are wondering How much postage do I need to send a letter or package? you can use stamps purchased in 2010 if you still have some. Postage rates did not go up in 2011. One first-class postage stamp is $0.44, and that is for a one ounce letter. For every additional ounce the letter weighs, add $0.17. An ounce in a letter is around five sheets of standard copy paper. Postcards cost $0.28 to send friends and family quick notes about your favorite vacation spots.
A USB Wi-Fi adapter or dongle is used to connect a computer or laptop to a Wi-Fi network. If your computer does not have an integrated network card, this type of device lets you connect without the need to install a card in your computer.
A 3G or WiMAX USB dongle is a portable device that attaches to a USB port to enable a PC to connect to WiMAX and (or) 3G networks. These connectivity dongles are popular with mobile users who require broadband Internet connectivity while on-the-go. Add-in cards for WiMAX or 3G are also available for laptops.