The Fiberplex PSM-5000 power supply module is designed to be inserted into the RMC- 5000 rack mount chassis. The module provides an operating voltage through the chassis backplane to power up to sixteen fiber optic module cards. Each rack mount chassis is shipped with one power supply module. For additional reliabilty and security, a second PSM-5000 may also be added for power redundancy. If the first PSM-5000 fails, the second PSM-5000 will take over the entire load and carry on normally. Additionally, if one PSM fails, an onboard alarm will sound. An PWR LED indicates that the +24VDC output voltage is present, and that the module is operating properly.