The stack on the left has individual blue LEDs per jack to indicate the presence of power. A single green LED is also placed to indicate control signal across the four ports. The module derives both power and control from the bus back plane of the chassis. Each port is individually fused at 1.5 amperes. These are a glass cartridge slow blow type and are cradled in clip style fuse holder on the PCBA board assembly of the module. Installation or replacement of fuses may be accomplished while hot swapping the card from the Chassis.
Connection of the module to the structured cabling system is done with modular RJ-45 patch cords through intermediate patch panels.