THE STARTECH.COM ADVANTAGE: StarTech.com offers a 2-year warranty and free lifetime technical support on this converter and has been the choice of IT professionals and businesses for over 30 years. ETHERNET OVER FIBER EXTENSION: Use this full duplex converter to convert and extend a Gigabit Ethernet connection over multimode LC fiber (up to 550m / 1804ft) with remote management capabilities. INCLUDES SFP: For added convenience, this IT-grade network fiber media converter includes an SFP transceiver, enabling an 850nm LC multimode Gigabit fiber connection. PLUG AND PLAY: Designed for ease of use, this LC RJ45 copper to fiber media converter provides a quick and easy setup. It can be used as a standalone device or mounted to a wall. MAXIMUM DURABILITY: Built to withstand harsh environments, this rugged media converter has a durable steel housing, and has an operating temperature range of 0°C-60°C (32°F-140°F).