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Cisco QSFP-H40G-CU Compatible 40G QSFP+ Passive Copper Cable

Cisco QSFP-H40G-CU Compatible 40G QSFP+ Passive Copper Cable

Built for hosts that recognize QSFP-H40G-CU, this HT-manufactured direct-attach DAC assembly delivers 40G direct-attach connectivity. It combines the connector ends and cable into one tested assembly, with 1m (3ft) covered by this series page.

Series Part Number: QSFP-H40G-CUHT Part Number: QSFP-H40G-CU

Product Highlights

  • HT-manufactured compatible alternative for Cisco QSFP-H40G-CU
  • 40G aggregate connectivity at 40Gbps
  • DAC
  • Length configurations covered: 0.5m (2ft), 1m (3ft), 1.5m (5ft), 2m (7ft), 3m (10ft), 5m (16ft) and 7m (23ft)
  • Conductor specification: 30AWG

Available Lengths and Corresponding Part Numbers

Each link below opens the separate product page for that physical length and its corresponding OEM part number. Select the exact assembly required by the managed route and keep its length-specific part number on the purchase order; different length codes are not interchangeable options.

0.5m (2ft) — QSFP-H40G-CU50CM 1m (3ft) — QSFP-H40G-CU1M 1.5m (5ft) — QSFP-H40G-CU1.5M 2m (7ft) — QSFP-H40G-CU2M 3m (10ft) — QSFP-H40G-CU3M 5m (16ft) — QSFP-H40G-CU5M 7m (23ft) — QSFP-H40G-CU7M

Compatible OEM Part Numbers

  • QSFP-H40G-CU50CM
  • QSFP-H40G-CU1M
  • QSFP-H40G-CU1.5M
  • QSFP-H40G-CU2M
  • QSFP-H40G-CU3M
  • QSFP-H40G-CU5M
  • QSFP-H40G-CU7M

Specifications

Cisco CompatibleQSFP-H40G-CU1M
ManufacturerHT
HT Part NumberQSFP-H40G-CU
Connector TypeQSFP+ to QSFP+
Max Data Rate40Gbps
Minimum Bend Radius35mm
Wire AWG30AWG
Cable Length0.5m (2ft), 1m (3ft), 1.5m (5ft), 2m (7ft), 3m (10ft), 5m (16ft) and 7m (23ft)
Jacket MaterialPVC (OFNR)
Temperature0 to 70°C (32 to 158°F)
ProtocolsSFF-8436, QSFP+ MSA and IEEE 802.3ba

Cisco 40G Cable Models

Related cable series are selected by host compatibility, interface configuration, speed and cable technology. Check the complete part number and required breakout arrangement before ordering.

QSFP-H40G-CU | DAC QSFP-4SFP10G-CU | DAC, 40G QSFP-4X10G-AOC | AOC, 40G QSFP-8LC-AOC | AOC, 40G QSFP-H40G-ACU | ACC, 40G QSFP-H40G-AOC | AOC, 40G SFP-H25G-CU | DAC, 25G

Compatible Brands and Cable Part Numbers

These series share the same verified interface and hardware signature. Host identification and compatibility coding remain brand-specific, so select the version intended for your equipment.

CiscoQSFP-H40G-CU Arista NetworksAOC-Q-Q-40G Arista NetworksCAB-Q-Q Brocade40G-QSFP-C-0101 Brocade40G-QSFP-QSFP-C-0701 CiscoQSFP-H40G-ACU CiscoQSFP-H40G-AOC Dell470-AAVN DellCBL-QSFP-40GE-ACTV Extreme Networks10312 Extreme Networks40GB-AC07-QSFP Extreme Networks40GB-F01-QSFP GenericQSFP-40G-AC H3CLSWM1QSTK7A H3CQSFP-40G-D-AOC HPE H3CJG326A IntelXLDACBL1 Juniper NetworksEX-QSFP-40GE-DAC Juniper NetworksJNP-40G-AOC Juniper NetworksQFX-QSFP-DAC-7MA NVIDIA/MellanoxMC2206310-001

Applications and Deployment

Passive DAC assemblies are normally used for short switch-to-switch, switch-to-server and rack-adjacent links. They draw very little power and avoid separate optical components, but the selected length must remain within the host and cable specification.

The the stated connector configuration interface and 40G data rate must match the equipment at both ends. For breakout versions, confirm the lane mapping and the speed of every downstream port; matching connector shapes alone does not establish interoperability.

Cisco Compatibility and Testing

The assembly is configured for equipment that recognizes the QSFP-H40G-CU series. Before shipment, we check connector identification, link establishment and electrical link stability, signal integrity and diagnostic readouts. Host hardware and firmware revisions can affect third-party cable acceptance, so customers can provide the switch, server or accelerator model and software release for a pre-order compatibility review.

Ordering Information

Quote HT part number QSFP-H40G-CU, the required length from 0.5m (2ft), 1m (3ft), 1.5m (5ft), 2m (7ft), 3m (10ft), 5m (16ft) and 7m (23ft), and the OEM part number used by your equipment. The length-specific OEM identifiers above link to their own product pages so each reference can be ordered separately.

Frequently Asked Questions

Is this an original Cisco cable?

No. It is an HT-manufactured compatible cable for equipment that specifies QSFP-H40G-CU, not an original Cisco-branded product.

Which lengths are covered by this product page?

This series page covers 0.5m (2ft), 1m (3ft), 1.5m (5ft), 2m (7ft), 3m (10ft), 5m (16ft) and 7m (23ft). These are the length configurations identified from the source product records; contact us if a different project length is required.

Can this DAC cable connect different port speeds or breakout configurations?

Only when both host ports support the exact aggregate rate, lane mapping and breakout mode stated in the specifications. Confirm the equipment models before connecting unlike interface versions.

Does the cable need separate modules at each end?

No. The connector ends and cable form one complete direct-attach assembly. Do not attempt to detach the ends or treat the assembly as two independent modules.

Quality Assurance and Packaging

Every DAC assembly undergoes continuity and link testing, compatibility verification and a visual inspection of both connector ends. Cables are coiled without exceeding their minimum bend radius, fitted with connector protection and packed in anti-static bags or protective trays before cartoning. Project labels and packing lists are available for volume orders.

Shipping and Lead Time

Standard configurations normally ship within one to three working days. Worldwide courier, air freight and sea freight options are available, and shipments can also be sent on your own courier account or delivered to an appointed forwarder.

 

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