DACPCKB42 DAC-PCKB42 DAC-PCKB42181 DACPCM1720 DAC-Q28-100G-0.5M-C DAC-Q28-100G-1.5M-C DAC-Q28-100G-2.5M-C DAC-Q28-100G-2M-C DAC-Q28-4SFP28-25G-0.5M-C DAC-Q28-4SFP28-25G-1.5M-C