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40G QSFP+ to 4x10G SFP+ Passive Direct Attach Copper Breakout Cable

  • 40GbE QSFP+ to 4xSFP+ DAC Direct Attach Copper Twinax Breakout Cable, Passive.40G
  • QSFP+ to 4xSFP+ Cable can connect 40 Gigabit switch, router, server, NIC, or other fiber optic equipments with QSFP+ ports to 10 Gigabit equipments with SFP+ port for Network Attached Storage, Storage Area Network, and High Performance Computing.
  • Data Rate: 40Gb/s.
  • Connectors: QSFP+ to 4SFP+.
  • All prices listed exclude taxes, import fees, and customs duties. Customers may be subject to these fees.
As low as $37.99
Availability: In stock

40G QSFP+ to 4x10G SFP+ Passive Direct Attach Copper Breakout Cable Assemblies

The QSFP+ to 4x SFP+ copper DAC cable is a 40GBase QSFP+ hybrid passive cable. A side is a QSFP+ connector, B side is 4 SFP+ connectors. It’s an application for the link with QSFP+ port on 40Gb/s rate switch or host and feeds up to 4 upstream 10Gb/s switch or host.
40G QSFP+ to 4x10G SFP+ Passive Direct Attach Copper Breakout Cable.

All our 40G QSFP+ Passive Direct Attach Copper Twinax Cables are 100% compatible with major brands like Cisco, Arista, Juniper, Dell, Mellanox, Enterasys, Ubiquiti, Netgear, Force10, Extreme, Intel, D-link, BROCADE, HPE, H3C, IBM, Lucent, SUN, EMC, PHICOM, TP-LINK, and so on.

Every cable is individually programmed and tested to work with 40G switches, routers, network adapters, and network storage systems.


  • QSFP (40G) to 4x SFP+ (10G) Splitter Cable
  • Connector A: (1) QSFP 40.0 Gb/s Rated Connector (SFF-8436 Compliant)
  • Connector B: (4) SFP+ 10.0 Gb/s Rated Connectors (SFF-8431 Compliant)
  • Economically Links up a QSFP port with an Upstream 10GbE-SFP+ Switch
  • Protocol agnostic support of 40GbE, QDR InfiniBand, SAS & Fibre Channel
  • Up to 10.3125 Gb/s transfer rate per SFP+ channel (40 Gb/s aggregate)
  • Robust Zinc die-cast SFP+ & QSFP connectors with pull-to-release latching
  • Bridge the gap between your 10G and 40G capable switches/host adapters
  • Low cross-talk and pair-to-pair skew maintains signal integrity
  • Fully compliant to the latest SFP+ & QSFP MSA (Multi-Source-Agreement)
  • Supports all current 10-Gigabit Ethernet and 40-Gigabit Ethernet standards
  • Designated form factor and electrical compliance for QDR InfiniBand
  • The perfect direct attached storage splitter cable for Fibre Channel & SAS
  • Enjoy a reduced power budget and lower port cost compared to optical
  • Fully RoHS compliant for environmental protection


  • SFF-8436
  • QDR infiniband
  • 10GE/40GE
  • RoHS Compliant
Cable Length Wire AWG Data Rate Cable Type
0.5m 30AWG 40Gbps Passive Twinax
1m 30AWG 40Gbps Passive Twinax
1.5m 30AWG 40Gbps Passive Twinax
2m 30AWG 40Gbps Passive Twinax
2.5m 30AWG 40Gbps Passive Twinax
3m 30AWG 40Gbps Passive Twinax
4m 26AWG 40Gbps Passive Twinax
5m 26AWG 40Gbps Passive Twinax
7m 24AWG 40Gbps Passive Twinax
  • 40GbE and high density 10GbE interconnects
  • Datacom/Telecom switch & router connections
  • Data aggregation and backplane applications
  • Proprietary high speed Interconnections
  • Infiniband Connectivity SDR/DDR/QDR
  • Data center cabling infrastructure
More Information
Vendor Name Macroreer Network
Form Factor QSFP+ DAC Cable
cable-type Twinax
Max Data Rate 40Gbps
Minimum cable bend radius 30 mm
Connector Type QSFP+ to 4SFP+
Wire AWG 1-3m:30AWG; 5m:26AWG
Jacket Material PVC(OFNR)
Environment Operating: 0°C to 70°C,Storage: -40°C to 85°C
Certification UL, CE, TUV, FCC, Rosh
Compliance IEEE802.3ba,InfiniBand SDR/DDR/QDR,Fibre Channel/Fibre Channel over Ethernet (FCoE),SFF-8436,RoHS

If items don't work as expected, Macroreer warranty may allow the items to be returned, exchanged, or repaired.


We offer a 30-day return & refund and exchange service for most in-stock items. And within the warranty period, we still offer free repair services.

For consumables, there is no warranty period and free repair services.
If there are any quality issues after delivery, please feel free to contact us. We will handle it promptly. View Return Policy and Warranty page for more details.