Electronic device attached to a computer

• (computer science) an electronic device that must be attached to a computer in order for it to use protected software
• Adapter used with a computer
• Golden (anag) — electronic device attached to a computer
• Computer plug-in
• Electronic device

Wiktionary Word definitions in Wiktionary
n. 1 (context computer hardware English) Any small device which plugs into an electronic device, typically a computer, and alters its functionality. Common examples include wireless modems, software copy protect devices, and adapters. Some USB keyboards ...

WordNet Word definitions in WordNet
n. (computer science) an electronic device that must be attached to a computer in order for it to use protected software

Wikipedia Word definitions in Wikipedia
A dongle is a small piece of hardware that connects to another device to provide it with additional functionality. In relation to computing, the term is primarily associated with hardware providing a copy protection mechanism for commercial software—in ...