Modification of Ducky One Mechanical Keyboard by adding LEDs. The LEDs were ordered on eBay, there you can buy ones that do not have extra plastic border around (but the standard LEDs would do just fine). The firmware was updated from Ducky One DKON1608S. The original firmware works with LEDs as well, but does not support one interesting function – programing 2 profiles, where one can assign if a key LED is on of off per specified key (see the manual for Ducky One DKON1608S). The original key caps were side-printed.