The Asus Tinker Board is a single-board computer launched by Asus in early 2017. Its physical size and GPIO pinout are designed to be compatible with the second and third-generation Raspberry Pi models. The first released board features 4K video, 2 GB of onboard RAM, Gigabit Ethernet and a Rockchip RK3288 processor running at 1.8 GHz.

A general-purpose input/output (GPIO) is an uncommitted digital signal pin on an integrated circuit or electronic circuit board which may be used as an input or output, or both, and is controllable by software.