Logitech is pretty big on their Unifying receivers, which are used to connect up to six Logitech devices using similar (but incompatible) technology to Bluetooth. Why is that? Additionally, not all devices have bluetooth, and not all devices have USB-A ports. Exploiting the CVE-2019-13052 vulnerability will enable attackers to "passively obtain Logitech Unifying link encryption keys by capture of pairing" between the receiver and the Logitech … The unifying receivers tend to be marked with a 'red star' type logo, though my one has the text '1000Hz' printed on it instead because it came with a 'high performance' mouse. kinda. logitech Unifying technology allows multiple device (logitech only, obviously) to connect to 1 single Unifying dongle. The Logitech Unifying receiver is a small dedicated USB wireless receiver, based on the nRF24L-family of RF devices, that allows up to six compatible Logitech human interface devices (such as mice, trackballs, trackpads, and keyboards; headphones are not compatible) to be linked to the same computer using 2.4 GHz band radio communication. Here's where it gets counter-intuitive. The following is based on the capabilities of NRF24LU1, which is used by some models of the logitech “unifying” dongle, with the 6-device limitation. I happened to know that the Logitech Unifying Receiver that my spare laptop mouse uses is based on the same chip as the Crazyradio. Logitech items without this Unifying technology cannot connect to Unifying dongle. Hello, Some Unifying-ready Logitech devices, such as the M305 mouse, come with a non-Unifying receiver. Because the mouse is designed for use with multiple devices. However if you can get a working non-Unifying dongle, there's a Logitech software that can help re-pair the device with the dongle. It looks the same, but instead of the Unifying logo it has "NANO RECEIVER" written on the case. I wanted to try writing an app for my smartphone that pretends to be a mouse and sends data to the receiver. The board inside the Logitech unifying receiver is a simple affair, with some pads for the USB connector, a crystal, the nRF24LU1+ radio module, and a few passives. A new screen presented two buttons: Add Unifying Device or Add Bluetooth Device. I recently obtained a wireless mouse, which came with a Logitech Unifying Receiver (a small USB dongle that plugs into the computer and communicates with the mouse/other compatible devices (such as keyboards)). ... Hackaday, Hack … Why isn't it just Bluetooth or just the Unifying Receiver? 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