Connecting a PC, Server, or Workstation. To connect a PC (or other Ethernet devices) to an Ethernet switch port, follow these steps: Step 1 Connect one end of the yellow Ethernet cable to an Ethernet switch port on the router.Step 2 Connect the other end of the cable to the RJ-45 port on the network interface card (NIC) that is installed in the PC, server, or workstation. Step 3 (Optional) Connect additional servers, PCs, or workstations to the other Ethernet switch ports.o connect an external Ethernet switch to an Ethernet switch port on the router, perform these steps: Step 1 Connect one end of the yellow Ethernet cable to an Ethernet switch port on the router. Figure 3-2 shows a Cisco 888W router connected to an Ethernet switch.