The Cisco 100GBASE Quad Small Form-Factor Pluggable (QSFP) Q100-ZR4-S-EA provides customers with a 100 Gigabit Ethernet ZR connectivity option for data centers, high-performance computing networks, enterprise core and distribution layers, and service provider applications. This QSFP-100G module is our latest generation of 100G transceiver module based on a QSFP form factor (See Figure 1).