GIGALIGHT 400G QSFP-DD immersion cooling extender is an important part of liquid immersion solution, normal QSFP-DD form transceiver/AOC can be used for immersion environment with this product. This product include extender cage, cable, QSFP-DD housing three parts,the cable length can be customized no more than 0.5m for extension, that can avoid the optical lens/engine/interface exposure to the liquid indirectly.