Cisco QSFP-40G-SR4-S

The Cisco QSFP-40G-SR4-S is a 40 Gigabit Ethernet transceiver module designed for use in high-speed data center and enterprise networking environments. It is part of the Cisco Quad Small Form-Factor Pluggable (QSFP) family of transceivers. The "SR4" in the model name stands for "Short Reach 4," indicating that it is designed for short-range transmission over multi-mode fiber optic cables. It supports a maximum link length of 100 meters using OM3 or OM4 fiber. The "S" in the model name indicates that it is a Cisco-branded transceiver, as opposed to a third-party or generic module. The QSFP-40G-SR4-S transceiver operates at a wavelength of 850nm and uses a parallel fiber optic interface with four lanes of transmission and four lanes of reception. It supports a data rate of 40 Gbps (Gigabits per second) and is compatible with various Cisco networking devices, including switches, routers, and network interface cards. Overall, the Cisco QSFP-40G-SR4-S is a high-performance transceiver module used for high-speed data transmission in data center and enterprise networking applications.