100G QSFP28 PCC (Passive Copper Cable), also known as Direct Attach Copper (DAC) cable or Twinax cable, provides robust connections for 100G Ethernet and InfiniBand systems. Each cable consists of four lanes each operating at data rates of up to 25Gb/s. The passive copper cables require no additional power to ensure quality connectivity. The cables are compliant with SFF-8665 specifications and provide connectivity between devices using QSFP28 ports. Each QSFP28 port comprises an EEPROM providing product information, which can be read by the host system.