Cisco QSFP-40G-LR4-S

The Cisco QSFP-40G-LR4-S is a transceiver module designed for high-speed data transmission over optical fiber networks. It is part of the Cisco Quad Small Form-Factor Pluggable (QSFP) family and supports a data rate of 40 Gigabits per second (Gbps). The "LR4" in the model name stands for "Long Reach 4," indicating that it is capable of transmitting data over long distances. The "S" at the end denotes that it is a Cisco original product. The QSFP-40G-LR4-S transceiver module uses four wavelengths (1310 nm) to transmit and receive data, with each wavelength carrying 10 Gbps of data. It supports single-mode fiber (SMF) and can transmit data up to a distance of 10 kilometers (6.2 miles). This transceiver module is commonly used in data centers, telecommunications networks, and other high-bandwidth applications that require long-distance transmission of data at 40 Gbps speeds.