I came across this device primarily through 5 requirements that it optimally met: 1. At least 2 fiber optic connections 2. Configurable 3. multicast suitable for T-Entertain. Unlike simple switches the Entertain multicast signal is not blown out on all ports and stuffs 10Mbit / s devices to so that nothing goes (though the configuration is a bit tricky) 4. Without fan 5. Affordable