High-Speed Rack Solution: HPE R4G19A compatible 25GBase-CR 1 Meter Direct Attach Cable (DAC) as a passive 25G Twinaxial copper variant, with SFP28 to SFP28 connection and 30 AWG wire diameter, for connecting hardware in racks and across adjacent racks, compliant with MSA standards from the brand BlueLAN. This HPE R4G19A compatible 25GBase-CR 1 Meter Direct Attach Cable (DAC) is designed for transmitting electrical signals over short distances and operates considering the respective transmission protocol. This HPE R4G19A compatible 25GBase-CR 1 Meter Direct Attach Cable (DAC) is suitable for use in all common hardware platforms (such as switches, routers, storage systems, etc.) that officially support the original HPE R4G19A 25GBase-CR 1 Meter Direct Attach Cable (DAC). Each HPE R4G19A compatible 25GBase-CR Direct Attach Cable (DAC) supports Ethernet, FCoE, Fibre Channel, and InfiniBand applications of up to 25G per second.