Cisco CPAK-100G-ER4L

The Cisco CPAK-100G-ER4L is a high-performance pluggable transceiver module designed for use in Cisco networking equipment. It is specifically designed for long-reach data transmission over single-mode fiber optic cables. The "100G" in the name indicates that it supports data rates of up to 100 gigabits per second. The "ER4L" stands for Extended Reach 4-Lane, indicating that it can transmit data over longer distances compared to other types of transceivers. This module is commonly used in data centers and telecommunications networks to enable high-speed and long-distance connectivity.