Port card installation Adding or replacing port cards will require the system to be taken out of service (the ESI-50 doesn’t support “hot-swapping” of its port cards). These instructions cover both types of ESI-50 port cards — the 482 card (used on all ESI-50 models) and the DLC82 card (not compatible with the ESI-50L1). Each card has cable connectors in the same location, but the connectors have different names depending on the card type: • On the 482 card, the connectors are J1 and J2, respectively. • On the DLC82 card, the connectors are J8 and J9, respectively.