A dongle's a small piece of hardware that connects to a computer or laptop. It's a portable device and's often identical in appearance to a USB Pen. Although earlier use of dongles was to authenticate a piece of software, the word dongle's now widely used to refer to a broadband wireless adaptor. Electrically, the authentication dongles mostly appear as two-interface security tokens with transient data flow that doesn't interfere with other dongle functions and a pull communication that reads s… (More on Dongle)