This 50G QSFP28 transceiver can be offered with a choice of 1-lane 50G PAM4 or 2-lane 25G NRZ electrical interfaces. The digital diagnostics functions are available via an I2C interface, as specified by the QSFP28 MSA. The Cisco QSFP-100G-DR-S compatible 100GBASE-DR Single Lambda QSFP optical transceiver module is designed for use in 100GBASE Ethernet throughput up to 500m over single mode fiber (SMF) using a wavelength of 1310nm via duplex LC connectors. These products feature four channels of 25G NRZ electrical signals and four channels of 25G NRZ optical signals, a duplex LC connector, a distance of up to 10km reach via single-mode fiber, a case temperature range of 0°C~70°C, and. The leaf-spine architecture network, designed with 400G QSFP-DD switches and 100G/400G optical modules, meets the requirements of high bandwidth, low latency, low convergence, and low power consumption, making it a highly efficient network. © 2023 Cisco and/or its affiliates. The Gigalight 200G QSFP-DD SR8 NRZ 100m optical transceiver (GQD-MPO201-DSR4C) is designed for 2x. FIBERSTAMP 0G QSFP28-DD AOC active optical cable is used for short-distance interconnection between internal devices in the data center, conforms to IEEE 802. 3by 25GBASE-SR Ethernet and InfiniBand EDR Transfer.