The IST83003 keyboard is a USB keyboard chip with always-on backlighting and support for the Copilot function. The IST83003 keyboard series can be divided into two chip models, IST83003-AI1 and IST83003-AI2, based on the different positions of the Copilot key in the array (see 5.1 IST83003 Keyboard Model Description for details). The IST83003 keyboard series supports three keyboard array functions, and different keyboard array functions can be selected through the Matrix PAD.