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A wireless keyboard is a computer keyboard that allows the user to communicate with computers, tablets, or laptops with the help of radio frequency (RF), such as WiFi and Bluetooth or with infrared (IR) technology.
Logitech Unifying receiver (older) Logitech Unifying receiver (newer) Unifying logo The Logitech Unifying Receiver is a small dedicated USB wireless receiver, based on the nRF24L-family of RF devices, [1] that allows up to six compatible Logitech human interface devices (such as mice, trackballs, touchpads, and keyboards; headphones are not compatible) to be linked to the same computer using 2 ...
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 ...
In computing, the USB human interface device class (USB HID class) is a part of the USB specification for computer peripherals: it specifies a device class (a type of computer hardware) for human interface devices such as keyboards, mice, touchscreen, game controllers and alphanumeric display devices.
Free Spinning (toggled by software - various methods available) IR Laser: 800: 2.4 GHz: LY11, L-LL11: A Bluetooth (rather than RF) version of this mouse was bundled with the MX5500 keyboard starting in 2008. Replaced by Performance Mouse MX in 2009. VX Revolution 2006: 10: Free Spinning (toggled by mechanical switch) IR Laser: 800: QUAD 2.4 GHz ...
The keyboard controller is also MIDI compatible via a standard MIDI port (5-pin DIN connector) on its side. As such it can be connected to most synthesizers (via a MIDI cable) and computers (via a MIDI-to-USB adapter), allowing the controller to be used as a real musical instrument. The controller transmits keyboard notes on MIDI channel 1.
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The adapter enables any standard USB peripheral to be attached to an OTG device. Attaching two OTG-enabled devices together requires either an adapter in conjunction with the device's USB-A cable, or an appropriate dual-sided cable and a software implementation to manage it. This is becoming commonplace with USB Type-C devices.