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A Chromecast stick plugged into the HDMI port of a TV. The cable attached to the other end is the USB power supply. In the mid-to-late 2010s, the dongle form factor was extended to digital media players with a small, stick-like form factor—such as Chromecast and Fire TV Stick—that are designed to plug directly into an HDMI port on a television or AV receiver (powered via Micro USB ...
A double entendre on the word "dongle" was overheard at a Python Conference (PyCon) programmers' convention on March 17, 2013, which led to two people being fired and a denial-of-service attack. History
"Dongle is a generic term for small external devices designed to plug directly into a port on a computer, smart TV or other intelligent device, to provide additional functionality." In the notes below "computer" is used to cover intelligent devices such as computers, smart TVs, etc. - anything to which the dongle adds additional functionality.
There are potential weaknesses in the implementation of the protocol between the dongle and the copy-controlled software. For example, a simple implementation might define a function to check for the dongle's presence, returning "true" or "false" accordingly, but the dongle requirement can be easily circumvented by modifying the software to always answer "true".
USB OTG is a part of a supplement [2] to the Universal Serial Bus (USB) 2.0 specification originally agreed upon in late 2001 and later revised. [3] The latest version of the supplement also defines behavior for an Embedded Host which has targeted abilities and the same USB Standard-A port used by PCs.
Dongle Hardware key containing electronic serial number required to run the software; relatively expensive and has no recovery when the hardware breaks.
Acoustic coupler modems used a telephone handset as the audio medium, with the user dialing the desired number and then pressing the handset into the modem to complete the connection.
The network controller implements the electronic circuitry required to communicate using a specific physical layer and data link layer standard such as Ethernet or Wi-Fi. [a] This provides a base for a full network protocol stack, allowing communication among computers on the same local area network (LAN) and large-scale network communications through routable protocols, such as Internet ...