This chapter describes how to configure the Optical Amplifier Module and Protection Switching Module (PSM). When you plan to replace a configured optical module with a different type of optical module, you must clear the configurations of the old module before you install the new module. This example uses the Moduletek SFP-10G-LR module connected to an Intel X520 network card. Quad-port. Check the model of the faulty optical module. If the optical module is installed on a GE port, run the display interfaceGigabitEthernet x/x/x command to view port information when the optical module.