This super-convenient I Teach Therefore I Rock USB Hub lets your teachers charge up to 4 electronic devices at one time! Perfect as a Teacher Appreciation Week gift or a teacher award any time of year, this 1 1/2" x 3 1/2" USB hub includes 4 high-speed USB ports and a 2.0 interface. The words "I Teach, Therefore I Rock" and "#MAKING A DIFFERENCE" are laser engraved on the front.