# Cabling IOAs

This section describes the common connector types used with IOAs.

## LC Duplex Connectors

In accordance with EN60825-1, Safety of Laser Products - Part 1: Equipment Class, Requirements, and User's Guide (2001), multimode IOAs with LC connectors are defined as follows:

CLASS 1 LED PRODUCT.

In accordance with EN60825-1, Safety of Laser Products - Part 1: Equipment Class, Requirements, and User's Guide (2001), single-mode IOAs with LC connectors are defined as follows:

CLASS 1 LASER PRODUCT.

| Warning: Do not look directly into LC-style fiber connectors. The fiber-optic laser used in single-mode fiber (SMF) meets the regulatory requirements for casual exposure to the eye; however, looking directly into a laser can cause eye damage.

| Warning: EN60825-1, Class 1 laser fiber connectors are for connection only to Class 1 laser devices.

## SFPs

See IOAs Requiring SFPs and the E120 and E320 Module Guide for information on small form-factor pluggable transceivers (SFPs) used on IOAs.