The GLOBALfiber Q400G-DAC4Q is a 400G passive direct attach copper (DAC) breakout cable for connecting a 400G QSFP-DD switch port to four 100G QSFP56 interfaces. The integrated copper assembly is available in selectable lengths from 0.5 to 3 metres for short connections within racks or between nearby equipment.
Available coding and compatibility
Coding options: Arista, Cisco, Custom, Generic, NVIDIA-Mellanox(ETH).
Provide the equipment model, port configuration and software version for each connected device so that support can be checked. For other coding requirements, contact salg@globalfiber.no.
Key specifications
| Specification |
Details |
| Product number |
Q400G-DAC4Q |
| Cable type |
Passive direct attach copper (DAC), twinax |
| Capacity |
400 Gbps aggregate |
| Applications |
400G to 4 × 100G Ethernet |
| Power dissipation |
<0.1 W |
| Cable length |
0.5, 1, 2, 3 m; select the required length |
| Connector configuration |
1 × QSFP-DD to 4 × QSFP56 |
| Breakout configuration |
400G to 4 × 100G |
Installation requirements
The host port must support 4 × 100G breakout with the selected coding and the connector types at each end. Verify the 100G QSFP56 port mode on all four connected interfaces.