The StartechGigabit Ethernet Fiber Media Converter by StarTech is a high-quality networking device that allows for efficient data transmission over a fiber optic connection. With a wavelength of 850nm and a LC connector for multimode fiber, this media converter is ideal for connecting computers and servers in an enterprise networking setup. The open box indicates that it is brand new and ready to be used, making it a reliable choice for expanding network capabilities and ensuring fast and secure data transfer.This is opened box to ensure all parts are included however never used.