TP-Link TL-SM311LM / Standards and Protocols: IEEE 802.3z, CSMA/CD, TCP/IP / Wave Length: 850nm / Power Supply: 3.3V / Safety & Emission: FCC, CE / Cabel:Multi-mode Fiber / Fiber Type:50/125μm or 62.5/125μm Multi-mode / Max. Cable Length:550m / Data Rate:1.25Gbps / Port Type:LC/UPC