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Cisco 100G passive copper QSFP-to-QSFP cable, 3.28 ft, twinaxial finish

Cisco Systems, Inc.

Cisco Systems, Inc. QSFP-100G-CU1M network ethernet cable 3.28 ft passive

SKU CH-6JF9-V5BN0 MPN QSFP-100G-CU1M

A 1-metre passive copper cable with QSFP connectors for 100GBASE-CR4 direct-attached links

  • Cable categoryQSFP
  • First connector1 x QSFP Network
  • Second connector1 x QSFP Network
  • Overall length3.28 ft (1 m)
  • Key featuresFeatures:Passive
  • 100 Gbps direct-attach speed with 100GBASE-CR4 passive copper
  • 28 ft twinaxial reach for short rack connections
  • QSFP-to-QSFP design fits Cisco 100G ports
  • Passive construction needs no external power
  • Compatible with EPA-QSFP-1X100GE= and N9K-C9336C-FX2-OR line cards

100GBASE-CR4 passive copper link

This Cisco QSFP-100G-CU1M is a 100GBASE-CR4 passive copper cable built for direct-attached 100 GbE links. It connects two QSFP ports with a twinaxial assembly rated at 3.28 ft. The passive design draws no external power and suits rack-to-rack or intra-rack deployments. It targets network engineers who need a fixed-length, low-latency interconnect without active optics.

Sustained signal integrity over copper

Passive twinaxial construction maintains the 100 GbE lane rate across the full 3.28 ft without signal regeneration. Heat rise stays minimal because no onboard electronics convert or retime the signal. Insertion loss and crosstalk remain within the 100GBASE-CR4 electrical spec for the stated reach. The cable is qualified for continuous operation in Cisco switching and routing platforms listed in the compatibility matrix.

Fixed one-metre reach decides fit

Length is the single parameter that determines whether this part matches the physical topology. At exactly 3.28 ft it bridges adjacent or near-adjacent QSFP ports; longer runs require active optical or active copper alternatives. No field adjustment or extension is possible. Verify the port-to-port distance before ordering.

How it compares

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Price $215.99
Pricier than about 91% of the 9,945 comparable items (median $14.99).

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Specifications

Product
Brand nameCisco
Connectivity
Cable categoryQSFP
Ports & slots
First connector1 x QSFP Network
Second connector1 x QSFP Network
Size & build
Overall length3.28 ft (1 m)
Shipping weight0.68 kg
Package size320 × 255 × 30 mm

Questions about this item

Does the passive 3.3 ft QSFP cable generate noticeable heat when running at 100 GbE all day?

Passive copper twinax has no active electronics, so it produces no measurable heat during continuous 100 GbE operation.

What switch ports must I already have to plug this QSFP-to-QSFP cable in?

Both ends need a 100G QSFP28 port; the part is validated with EPA-QSFP-1X100GE=, N9K-C9336C-FX2-OR, NCS-55A1-24H-TRK and NCS-55A1-36H-SE-B modules.

Will the 3.28 ft passive assembly work reliably with the 100G QSFP28 optics already installed in my rack?

Yes, the cable is a direct-attach copper pair built to the 100GBASE-CR4 spec, so it interoperates with any compliant 100G QSFP28 transceiver port.

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