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Home Optics and Transceivers DAC/AOC/AEC Cables Cisco QSFP-4SFP25G-CU1M Passive Copper Breakout Cable

Cisco QSFP-4SFP25G-CU1M Passive Copper Breakout Cable

Brand:
Cisco

The Cisco QSFP-4SFP25G-CU1M is a 1-meter passive copper breakout cable designed to connect a 100G QSFP28 port to four 25G SFP28 interfaces. Built for high-speed data center and enterprise networking environments, it provides a cost-effective, low-latency solution for server aggregation, switch uplinks, and high-density network deployments.

OVERVIEW

  • The Cisco QSFP-4SFP25G-CU1M Passive Copper Breakout Cable is a high-performance direct attach copper (DAC) breakout cable engineered for modern data center, cloud, and enterprise networking environments. This 1-meter passive copper cable enables a single 100G QSFP28 port to connect to four independent 25G SFP28 interfaces, supporting flexible and efficient network scalability.
  • Designed for low-latency, high-bandwidth connectivity, the cable helps optimize switch-to-server and switch-to-switch communication while reducing power consumption and infrastructure costs compared to optical alternatives. Its passive copper architecture simplifies deployment and supports reliable short-range interconnects in high-density racks and enterprise networking environments.

USE CASES

  • Data center top-of-rack (ToR) switch connectivity
  • 100G to 4x25G server breakout deployments
  • Enterprise network upgrades to 25G Ethernet
  • High-density cloud infrastructure environments
  • Low-latency switch-to-server interconnections
  • Hyper-converged infrastructure networking
  • Storage area network (SAN) connectivity
  • ISP and telecom network deployments
  • Virtualized server environments

KEY FEATURES

  • Converts one 100G QSFP28 port into four 25G SFP28 connections
  • Passive copper DAC design for reduced power usage
  • 1-meter cable length optimized for rack-level connectivity
  • Supports high-speed 25GbE and 100GbE networking
  • Low-latency performance for enterprise applications
  • Simplifies high-density data center cabling
  • Cost-effective alternative to optical transceivers
  • Reliable short-distance network interconnect solution
  • Compatible with Cisco networking environments

TECHNICAL SPECIFICATIONS

  • Brand: Cisco
  • Model: QSFP-4SFP25G-CU1M
  • Product Type: Passive Copper Breakout Cable
  • Connector Type A: QSFP28
  • Connector Type B: 4 x SFP28
  • Data Rate: 100G to 4 x 25G
  • Cable Type: Direct Attach Copper (DAC)
  • Cable Length: 1 Meter
  • Cable Technology: Passive Copper
  • Supported Ethernet: 25GbE / 100GbE
  • Deployment Environment: Data Center & Enterprise Networks
  • Latency: Low-Latency Connectivity
  • Application: Switch-to-Server / Switch-to-Switch Connectivity
  • Power Consumption: Lower than optical alternatives
  • Compatibility: Cisco QSFP28 & SFP28 Platforms

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