NVIDIA Mellanox MCA1J00-H004E 200G HDR QSFP56 Active Copper Cable, 4m: This is a 4-meter Active Copper Cable (ACC) for 200Gb/s InfiniBand HDR (and 200GbE in VPI mode) point-to-point links between QSFP56 ports. The cable is a fixed-length integrated assembly with internal redrivers in each connector for signal conditioning. This is not a passive DAC and not an Active Optical Cable. This is a new (factory-sealed) unit.
Engineering Context
The MCA1J00-H004E carries 200Gb/s as 4 lanes of 50Gb/s PAM4 over copper twinax. At 4 meters, passive copper struggles to maintain PAM4 signal integrity, so the integrated redrivers re-equalize the signal at each end. ACC modules dissipate less power than AOC equivalents and are typically thinner and more flexible than 200G passive copper, easing routing in dense racks. The yellow pulltab provides quick visual identification when colour-coding HDR runs against other fabric speeds.
Deployment & Use Cases
Adjacent-rack and same-row HDR InfiniBand interconnects in HPC clusters. ConnectX-6 server NIC to Quantum HDR Top-of-Rack switch links of 3–5 meters where passive copper margins are tight. AI training fabrics where copper bend radius matters for cable management. Lab and integration benches needing reliable 200G HDR over short copper runs.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number: MCA1J00-H004E
Form Factor: QSFP56 to QSFP56
Data Rate: Up to 200Gb/s HDR (4x 50Gb/s PAM4)
Cable Type: Active Copper Cable (ACC) with redrivers
Length: 4 meters
Pulltab: Yellow
Protocol: InfiniBand HDR / 200GbE Ethernet (VPI)
Power: Active (host-powered)
Condition: New (factory-sealed)
Compatibility & Hard Constraints
Compatible with NVIDIA Quantum HDR InfiniBand switches (QM8700, QM8790), Spectrum-2 Ethernet switches at 200GbE, and ConnectX-6 VPI adapters with ports configured for 200Gb/s PAM4 operation. Requires the host port protocol (InfiniBand or Ethernet) to be set correctly. Not compatible with QSFP28 100G NRZ-only ports. Not a breakout cable — direct QSFP56-to-QSFP56 only. Not interoperable with NDR Quantum-2 OSFP fabrics. Fixed 4m length.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS sources factory-sealed ACC inventory and verifies link establishment in our lab when requested. See the full catalog at https://www.tes-itsolutions.com. Handling time is 1–3 business days.