Connection: Audio In: Mini Jack, Audio Out: Mini Jack, Composite: RCA, HDMI 1.4 x 2, Network: RJ-45, RS232: DB-9pin, USB x 2, VGA In: Dsub-15pin x 2, VGA Out: Dsub-15pin. Internal parts, fans, connectors, lamp and filter have been professionally cleaned to improve projector performance and extend it's life.