Cisco 100G QSFP28 is a high-speed transceiver module designed for use in 100 Gigabit Ethernet (100GbE) links. It is compliant with the QSFP28 MSA and IEEE 802.3bm 100GBASE-SR4 standards. This module supports up to 100Gbps data rate over a single-mode fiber (SMF) link with a maximum reach of up to 300m. It is designed for use in data centers, enterprise networks, and service provider networks. The module features a low power consumption of less than 1.5W and a compact form factor that allows for easy installation in tight spaces. It also supports digital optical monitoring (DOM) for real-time monitoring of optical link performance.