The FUMS-F Series Ethernet 4- and 8-port unmanaged switches are designed to transmit and receive 10/100 Mbps data over optical fiber through user-selectable small form-factor pluggable (FSFP) options; or 10 Mbps or 100 Mbps data over Cat5e or Cat6 electrical cable. The electrical interface autonegotiates between 10 Mbps or 100 Mbps Ethernet rates without any adjustments. The optical interface operates at a 100 Mbps Ethernet rate. These units integrate four or eight independent 10/100 Mbps channels in a single package. The FUMS-FFX4TX4, FUMS-FFX2TX2, FUMS-FTX4, and FUMS-FFX8 require interchangeable FSFP modules (ordered separately) for specific fiber type, distance, and connectors. Modular in design, these models may be either wall- or rack-mounted. LED indicators display operating status and critical operating parameters. These models are designed to operate in extreme environments. External power is required for the FUMS-F Series units. The units can be powered with the recommended FEXTPS fiber external power supply. The optical transmission of Ethernet-compatible IP camera surveillance video makes the FUMS -F Series ideal for transportation, airport, and college campus applications.