The 400G QSFP-DD SR8 100m transceiver is a high-speed optical module in QSFP-DD form factor, delivering 400Gbps bandwidth through 8-channel 850nm VCSEL arrays and PAM4 modulation
C-LIGHT 25G/10G Auto Adapting 40km SFP refers to a dual-rate optical transceiver module that supports both 10G and 25G data rates over 40km distances using single-mode fiber