100G to 4x25G SFP28 DAC Breakout Cable


Optcore’s QSFP20-4xSFP28-DAC-PxM is 100G QSFP28 to 4x25G SFP28 passive direct attach copper breakout cable assembly, which is also known as hybrid passive copper cable or Fan-out passive copper cable.

SKU: Q-4S28-DAC-PxM Category:


The hybrid passive copper cable is suitable for very short distances, which offers a highly cost-effective Ethernet connectivity solution for the interconnection between the devices using 100G QSFP28 ports and 25G SFP28 ports in data centers.

The QSFP20-4xSFP28-DAC-PxM fully complies with SFF-8665 and SFF-8402 specifications. It is developed specifically as a cost-effective and lower-power replacement to 100G QSFP28 optics and QSFP28 to 4xSFP28 active optical breakout cable (QSFP28 to 4xSFP28 breakout AOC) for very short distances.


• Connector A: 1x QSFP28 100Gbps Rated Connector
• Connector B: 4x SFP28 25Gbps Rated Connector
• Economically Links up a QSFP28 port with an upstream 25G SFP28 Switch
• Compliant with SFF-8665 and SFF-8402
• Optimized EMI/EMC performance
• Bridge the gap between your 25G and 100G capable switches/host adapters
• High-Density QSFP28 38-PIN and 4x SFP28 20-PIN Connector
• Reduced power budget and lower port cost compared to QSFP28 optics and AOC
• RoHS Compliant and Lead-Free


Product Series Direct Attach Copper Breakout Cable   Optcore Part Number Q-4S28-DAC-PxM
  Form Factor QSFP28 Breakout Copper Cable   Data Rate 100G to 4x25G
  Passive or actively equalized  Passive   Supply Voltage 3.3V
  Cable Length 0.5~5 meter   Cable impedance 100 Ω
  Cable Type Twinax   Wire Gauge 24/26/30AWG
  Minimum cable bend radius 35 mm   Cable Jacket Type PVC
  Connector QSFP28/SFP28   Digital Diagnostic Monitoring N/A
  Environment Operating: 0°C to 70°C
Storage: -40°C to 85°C
  Weight 0.34 kg
  Application Switches, servers, and routers
Data Center networks
Storage area networks
High-performance computing
Telecommunication and network infrastructure
Fibre Channel over Ethernet
  Compliance IEEE802.3ba
InfiniBand EDR
SFF-8665, SFF-8402

Additional information

Weight N/A
Dimensions N/A
Fiber Length



There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.