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Grey 40G QSFP+ passive copper cable with matching connectors, one metre long

Ficer Technology Co., Ltd

Ficer Technology Co., Ltd 40G QSFP+ DAC Cable 30AWG 1m Passive

SKU CH-CSG1-EZ060

Passive 40 Gbps QSFP+ direct-attach copper cable, 1 metre, 30 AWG, compliant with SFF-8436 and IEEE 802.3ba

  • TypeOthers
  • Length1 Meter
  • Connector DetailQSFP+ to QSFP+
  • 40 Gbps aggregate throughput with four 10.5 Gbps channels
  • Passive copper design needs no external power supply
  • Hot-pluggable QSFP+ connectors enable live device swaps
  • Compliant with QSFP+ MSA SFF-8436 and IEEE 802.3ba
  • All-metal housing and low crosstalk ensure signal integrity

40G QSFP+ Direct Attach Cable

This passive copper twinax cable provides a 40GBASE QSFP+ to QSFP+ link at one metre length. It suits data-centre racks, storage arrays and high-performance compute clusters that need short-reach 40 Gbps connectivity without optical transceivers. The 30AWG construction keeps the assembly light for dense patch-panel routing.

Sustained-load behaviour

Four independent duplex channels each run at up to 10.5 Gbps, giving an aggregate 40 Gbps throughput that remains stable because the cable is fully compliant with IEEE 802.3ba and InfiniBand QDR specifications. Low near-end crosstalk and precision pair-to-pair skew control preserve signal integrity over continuous operation, while the all-metal housing provides superior EMI shielding in crowded cabinets.

Deciding specification

The single factor that determines fit is the host-equipment coding required for the QSFP+ MSA SFF-8436 interface; the supplier must program the EEPROM for your specific switch, router or server brand such as Cisco, Juniper, Arista, HPE, Dell or Mellanox before the link will come up.

Highlights

  • 40 Gbps aggregate throughput with four 10.5 Gbps channels
  • Passive copper design needs no external power supply
  • Hot-pluggable QSFP+ connectors enable live device swaps
  • Compliant with QSFP+ MSA SFF-8436 and IEEE 802.3ba
  • All-metal housing and low crosstalk ensure signal integrity

Specifications

TypeOthers
Length1 Meter
Connector DetailQSFP+ to QSFP+

Questions about this item

How much heat does the passive 30 AWG twinax cable add to a rack running 40 GbE all day?

A passive DAC has no active electronics, so it adds virtually no heat beyond the negligible resistive loss of the copper conductors.

Which host-side equipment must already have QSFP+ ports coded for this cable to work?

The cable requires switches, routers, servers or storage with QSFP+ ports; the supplier programs the EEPROM for Cisco, Juniper, Arista, HPE/Aruba, Dell, Mellanox, Brocade or EdgeCore on request.

Will this 1 m passive cable link reliably to an older switch that only supports 10 GbE per lane?

Each of the four channels runs up to 10.5 Gbps, so a legacy 10 GbE-per-lane port will operate within spec at the shorter 1 m reach.

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