Logitech Unifying receiver
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The Logitech Unifying receiver is a miniaturised dedicated USB wireless receiver which permits up to 6 devices such as mice and keyboards, which must be made by Logitech and of compatible design, to be linked to the same computer using 2.4 GHz band radio communication in a way very similar to, but incompatible with, Bluetooth. It is not practical to fit receivers in several computers to allow the same input devices to be used (e.g., with a desktop and a laptop computer), as the devices need to be paired with the receiver each time, although the receiver and input devices can be moved together from one computer to another.
Receivers are supplied with Logitech input devices, and are also available separately.
A restriction on some Unifying devices limits them to a maximum of forty-five unique receiver pairings. Once the forty-fifth connection is made, it would no longer be possible to connect such a device to a different receiver. For users who often switch an Unifying device between multiple PCs or laptops with individual receivers, this connection limit will be reached.
Driver software is available for Windows and Mac OS X from Logitech. Wireless devices using the Unifying Receiver are supported since Linux 3.2.  Software to manage Unifying devices on Linux is available from third party developers, for example, Solaar.
- Logitech Unifying receiver
- Pairing Logitech Unifying Devices on GNU/Linux
- Logitech Unifying for Linux: Reverse Engineering and unpairing tool (ltunify)
- Gallegos, Gary. "Gadgets: The Logitech Unifying Receiver (aka "fake bluetooth")". Retrieved 23 February 2013.
- "Logitech Parts Store for Wireless Comboolaar MK520". http://www.logitech.com. Retrieved 4 April 2013.
- "Limitations on Unifying devices - Logitech Support Article". Retrieved 17 March 2015.
- "Linux Git commit: HID: Add full support for Logitech Unifying receivers". Retrieved 2 May 2013.
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