qsfp dd 400gbase dr4 transceiver 400g pam4 1310nm 500m smf mpo 12 refurbished Digital Video Recorder Marine and port safety warning

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qsfp dd 400gbase dr4 transceiver 400g pam4 1310nm 500m smf mpo 12 refurbished Digital Video Recorder Marine and port safety warningThe QSFP DD 400GBASE DR4 Transceiver is a high performance optical module designed to meet the demanding requirements of modern data centers and enterprise networks. Operating at 400G with PAM4 modulation and a wavelength of 1310nm, this transceiver supports reliable data transmission over single mode fiber (SMF) up to 500 meters. Its MPO 12 connector ensures compatibility with existing infrastructure, facilitating seamless integration and efficient