Cisco CAB-Q100G-4SFP25G-5M 100G to 4x25G Breakout Cable 5m

The Cisco CAB-Q100G-4SFP25G-5M is a direct-attach copper (DAC) breakout cable that converts a single 100G QSFP28 port into four independent 25G SFP28 connections. This architecture enables seamless integration between 100G spine switches and 25G server network interface cards, eliminating the need for separate transceiver modules and reducing signal degradation inherent in active conversion solutions.

Designed for high-density data center environments, this passive breakout cable delivers full line-rate performance across all four 25G channels simultaneously without power consumption or latency penalties. The 5-meter length accommodates mid-range rack-to-spine connectivity while maintaining signal integrity, making it ideal for AI training clusters, HPC facilities, and scale-out server deployments where per-port economics and aggregate throughput are critical.

The cable features ruggedized construction suitable for repeated insertion cycles in enterprise production environments. By enabling 4:1 oversubscription ratios or full-line rate aggregation depending on switch fabric design, organizations optimize capital expenditure on spine infrastructure while scaling server-side connectivity incrementally.

Ideal for

• AI/ML training clusters requiring 100G spine-to-server connectivity with 25G per-node fan-out
• HPC environments consolidating multiple 25G server NICs onto unified 100G fabric uplinks
• High-density virtualization hosts distributing 100G bandwidth across four VM-serving network segments
• Data lake ingest architectures with parallel 25G streams aggregated through 100G spine switching
• Hybrid cloud gateway nodes balancing multiple application workloads on shared 100G uplinks
• Network overlay and segmentation deployments requiring independent 25G VLAN/traffic isolation per server

Technical specifications

Available from Omnixon Global. Submit an RFQ and our team will confirm configuration and availability for your order.