For QSFP56 100G to 4*SFP56 50G DAC, everyone has different special concerns about it, and what we do is to maximize the product requirements of each customer, so the quality of our QSFP56 100G to 4*SFP56 50G DAC has been well received by many customers and enjoyed a good reputation in many countries. Zhaolong InterconnectQSFP56 100G to 4*SFP56 50G DAC have characteristic design & practical performance & competitive price, for more information on the QSFP56 100G to 4*SFP56 50G DAC, please feel free to contact us.