The MC220L is a media converter designed to convert 1000BASE-SX/LX fiber to 1000 Base-T copper media or vice versa. Designed under IEEE802.3ab 1000 Base-T & IEEE802.3z 1000 Base-SX/LX standards, the MC220L is designed for use with multi-mode/single-mode fiber cable utilizing the LC-Type connector. It works at 850nm on both transmitting & receiving data when adopting multi-mode fiber & 1310nm on both transmitting & receiving data when adopting single-mode. Other features of this module include the ability to be used as a stand alone device (no chassis required) or with TP-LINK´s 19´´system chassis, Auto MDI/MDI-X for TX port, & front panel status LEDs. The MC220L will transmit at extended fiber optic distances utilizing multi-mode fiber up to 0.55 kilometers & 10 kilometers when utilizing single-mode fiber.