However, some users may buy the wrong operating system for their interactive flat panel display, because there are mainly two sizes of operating systems on the market. In 2010, Intel introduced the Open Pluggable Specification (OPS) to standardize the system architecture between displays and media players. Since its release, OPS has quickly become the standard for creating integrated display solutions. In 2015, Intel specially developed a new and larger operating standard to meet market demand. They are all 80 pins, but OPS-C (abbreviation of OPS China) is slightly larger.

OPS size is 180 x 30 x 118 mm (width, height, depth)

OPS-C size is 180 x 42 x 195 mm (width, height, depth)