Quick installation guide for LB9217A and LB9218A This installation guide gives step-by-step instructions on how to install LB9217A & LB9218A that pertains to this 17-port modular Ethernet switch. Selecting a module combination with LB9217A and LB9218A LB9217A can be plugged in with the combination of different copper and fiber optic connectors. Following is a list of various modules pertains to this 17-port modulated Ethernet switch.