Yes, you can use the four 1 Gb network outputs with one 10 Gb network output, but this requires an expansion card for 10 Gb connectivity. The five Ethernet cables can be connected to a switch, but make sure that the switch supports 10 Gb connectivity if you want to use this speed for one of the connections. The four Gigabit Ethernet ports can be configured for link aggregation or redundancy, which can improve reliability and overall bandwidth.