This is an unmanaged one port RJ-45 to eight port SFP switch. It is designed with a switch controller and buffer memory that connects two types of media. This switch supports 10/100/1000 Base-T and 1000Base-X protocol, and operates under full duplex mode or half duplex mode. This can extend your fiber footprint or convert fiber runs from short multi-mode links to extended single-mode links. Our media converters and switches are 100% compliant for all of our networking needs. Now you have a cost effective solution to your network upgrade needs. With our certification test program, we can guarantee your product will work right the first time.