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
  • Compatible to Cisco QSFP-4SFP10G-CU1M
  • Complies with MSA SFF-8431 and SFF-8436 specifications
  • 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

  • N281-01M-BK 40 GbE QSFP+ to 10 GbE SFP+ Passive DAC Copper Breakout Cable (M/M), 1 m (3 ft.)
RoHS compliant


UPC Code037332193094
Brand CompatibilityCisco
Cable Type  Passive
Compatible BrandCisco
Side A - Connector 1QSFP+ (MALE)
Side B - Connector 1(4) SFP+ (MALE)
Cable Jacket ColorBlack
Cable Jacket MaterialPVC
Cable Outer Diameter (OD)4.2mm
Wire Gauge (AWG)30
Cable Length (ft.)3.3
Cable Length (in.)39.6
Minimum Bend Radius23mm
Shipping Dimensions (hwd / in.)12.00 x 10.50 x 0.50
Shipping Weight (lbs.)0.55
Unit Dimensions (hwd / in.)12.000 x 10.500 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
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