Star Trek LCARS Light Switch Cover Jettison that boring light switchplate! Trek -out your house with this cool LCARS Light Switch Cover! Features graphics based on the LCARS computer from Star Trek. Jettison that boring light switchplate and beam your living space into the future with these colorful switchplate graphics based on the LCARS computer from Star Trek. Dilithium crystals may not power your world, but now you can bring the dream into your home! The LCARS Light Switch Cover measures 4 1/2-inches tall x 2 3/4-inches wide and is for standard toggle light switches. LCARS stands for Library Computer Access/Retrieval System, the computer operating system in the Star Trek television series and movies.