HeyOptics offers transceiver, DAC, AOC Test Development Kit, includes:QSFP-DD module compliance board, QSFP compliance module, QSFP28 compliance board, SFP28 board host, SFP+ host compliance, which are an essential for development, testing and characterization of QSFP-DD, OSFP, QSFP28, SFP28 and SFP based products and can also be used for testing 400G CDRs, 400G Gearbox devices, 400G QSFP-DD ports on routers and line-cards, electro-optical modules, and QSFP-DD active optical cables.