Most universal sequence of keyboard presses to start an editor - Super User
Overview | USB NeXT Keyboard with an Arduino Micro | Adafruit Learning System
An USB keyboard for Media Players using Arduino Leonardo - jpralves.net
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Using Arduino as Keylogger - Arduino Stack Exchange
Arduino AVR C++: Simple USB HID multimedia keyboard based upon standard keyboard class - Stack Overflow
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Learn More | Trinket USB Keyboard | Adafruit Learning System
Converting an Old Military Keyboard Into a Modern USB Version with an Arduino - Hackster.io
USB to USB keyboard converter build log(Pro Micro 3.3v with mini host shield)
KVM Uses Many Arduinos | Hackaday
Can Arduino make USB devices? Try using the HID function with Arduino Pro Micro (Leonardo)