10000 Woodward Avenue
Woodridge, Illinois 60517
+1 773-869-1776
+1 (773) 869-1329
United States
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Connects and distributes your 40 GbE system directly into four 10 GbE servers, switches and/or adapters.

  • Supports serial data rates up to 40 Gbps
  • Complies with MSA SFF-8431 and SFF-8436 specifications
  • Compatible to Cisco QSFP-4SFP10G-CU1M
  • SDR, DDR and QDR compatible
  • Zinc die-cast QSFP+ and SFP+ male connectors
  • Pull-tab ejectors for quick, easy connections


Splits a 40 GbE Network System to Four 10 GbE Servers, Switches and/or Adapters
  • Ideal for data centers, high-end servers and enterprise wiring closets
  • Lower port cost and power budget when compared to fiber optics
  • Multi-platform support for 40GBASE-CR4, 10GBASE-CR4, 6G SAS, Fibre Channel and SONET

Top-of-the-Line Construction
  • Zinc die-cast male connectors for superior EMI resistance
  • Ergonomic pull-tab ejectors for quick, easy connections
  • 8-pair wire technology optimized for bandwidth-intense applications
  • Flexible 30 AWG conductors maintain smooth high-frequency response

Fully Compliant and Compatible
  • Compatible with SDR, DDR and QDR
  • Compatible with all QSFP and QSRP+ ports
  • Complies with latest MSA (Multi-Source Agreement) SFF-8431 and SFF-8436 architecture
  • Compatible to Cisco QSFP-4SFP10G-CU1M

System Requirements

  • Networking switch or other hardware with open QSFP+ ports

Package Includes

  • N281-02M-BK 40 GbE QSFP+ to 10 GbE SFP+ Passive DAC Copper Breakout Cable (M/M), 2 m (6.5 ft.)
RoHS compliant


UPC Code037332193100
Brand CompatibilityCisco
Cable Type  Passive
Compatible BrandCisco
Cable Jacket ColorBlack
Cable Jacket MaterialPVC
Cable Outer Diameter (OD)4.2mm
Wire Gauge (AWG)30
Cable Length (ft.)6.6
Cable Length (in.)79.2
Minimum Bend Radius23mm
Shipping Dimensions (hwd / in.)17.00 x 14.00 x 0.50
Shipping Weight (lbs.)0.80
Unit Dimensions (hwd / in.)17.000 x 14.000 x 0.500
Operating Temperature Range32° to 158°F (0° to 70°C)
Storage Temperature Range-4° to 185°F (-20° to 85°C)
Operating Humidity Range5% to 85% RH
Storage Humidity Range5% to 85% RH
Network Compatibility40 Gbps
IEEE Standards Supported802.3BA
Side A - Connector 1QSFP+ (MALE)
Side B - Connector 1(4) SFP+ (MALE)
Product ComplianceMSA SFF-8431; MSA SFF-8436; RoHS; REACH
Product Warranty Period (Worldwide)Lifetime limited warranty

Questions & Answers

Need help with your purchase?
We're always available to help with questions, including product selection, sizing, installation and product customization. Call us at +1 773-869-1776 or email