Media converter serves as a bridge between fiber optic and copper media. Options include single mode, multi-mode, and WDM (Wavelength-division multiplexing) fiber optic and 10/100/1000 Mbps copper media, allowing for stable and high-speed connection of geographically distant LANs. EtherWAN's media converter required to pass real-time data transfer test under -40°C to 85°C up to 72 hours no compromise.