What is rs 2?

It is unclear which "rs 2" you are referring to as there are several meanings for those letters. Some possible meanings of "rs 2" are:

  1. Runescape 2: It was the successor of the popular MMORPG Runescape and was released in 2004. It had updated graphics, gameplay, and new features compared to the original game.

  2. Audi RS2: It was a high-performance sports car produced by Audi between 1994-1995. It had a turbocharged inline-five engine that could produce up to 315 horsepower.

  3. RS-2: It is a type of signaling protocol used in Cisco networks. It supports up to 255 concurrent sessions per link.

Without more specific information, it is difficult to provide a more detailed answer.