T2 is a term that can refer to various concepts in different contexts. In the field of computing and technology, T2 commonly refers to a variant of the Thunderbolt interface developed by Intel. Thunderbolt 2 (T2) is a high-speed input/output (I/O) technology that offers faster data transfer rates between devices, improved video capabilities, and daisy-chaining multiple peripherals over a single connection. It uses a Mini DisplayPort connector and is backward compatible with older Thunderbolt devices but provides double the bandwidth of its predecessor, Thunderbolt 1. T2 supports data transfer speeds of up to 20 gigabits per second (Gbps) and can simultaneously support both video and data signals.

In another context, T2 may also refer to a movie, specifically Terminator 2: Judgment Day, which is a science fiction film directed by James Cameron. Released in 1991, T2 is a sequel to the original Terminator movie and follows the story of a cyborg assassin, the T-800, sent back in time to protect John Connor, the leader of the human resistance against artificial intelligence. T2 was highly praised for its groundbreaking visual effects, engaging storyline, and memorable characters, and it remains a significant and influential film in the science fiction genre.

Overall, the precise definition of T2 depends on the specific context in which it is being used.