Sky Optics 400G QSFP-DD VR4 is a ultra-short-reach multi-mode optical transceiver complying with 400GBASE-VR4 specification. It adopts 8-channel 850nm parallel VCSEL array and PAM4 modulation technology to achieve 425Gbps full-duplex high-speed transmission, with MPO12-APC interface supporting 30m(OM3)/50m(OM4/OM5) multi-mode fiber transmission.

Para.2: Designed for ultra-short-distance intensive wiring scenarios, the module features ultra-low power consumption below 7.5W, which effectively reduces data center overall energy consumption. It supports 0℃-70℃ stable operation, complete I²C DDM diagnosis and CMIS4.0 protocol compliance, with RoHS and CE certifications. The mature vertical cavity laser technology ensures ultra-stable signal output and low bit error rate.

Para.3: As a professional ultra-short-reach 400G interconnection solution, VR4 is mainly used for in-cabinet switch stacking, intra-chassis high-speed interconnection, ultra-short-distance wiring of high-density server clusters, and supercomputer internal link deployment. It is the best energy-saving and cost-effective choice for 400G ultra-short-distance intensive networking.