Cisco QSFP-H40G-CU5M Compatible 40G QSFP+ Passive Copper Cable, 5m (16ft)

For short, high-density connections, this DAC cable combines 40G performance with a fixed 5m (16ft) cable run. It corresponds to Cisco QSFP-H40G-CU5M and uses a factory-terminated passive copper link without separate optical modules or patch cords.

OEM Part Number: QSFP-H40G-CU5MHT Part Number: QSFP-H40G-CU5M

Product Highlights

• Compatible alternative to Cisco QSFP-H40G-CU5M
• 40G connectivity at 40Gbps
• Interface configuration: QSFP+ to QSFP+
• Fixed length and part number: 5m (16ft), QSFP-H40G-CU5M
• Conductor specification: 26AWG
• Minimum bend radius: 40mm

This assembly uses 26AWG conductors, PVC (OFNR) jacket, minimum bend radius 40mm. These mechanical characteristics affect how the cable should be dressed behind the equipment. Avoid sharp edges, excessive ties and repeated tight bends close to the connector boots.

QSFP-H40G-CU5M occupies the middle of this family between QSFP-H40G-CU3M at 3m (10ft) and QSFP-H40G-CU7M at 7m (23ft). It adds 2m over the shorter option for extra routing clearance, while the next longer version adds another 2m. Measure the managed path and choose this version when its reach is sufficient without creating the slack associated with the longer assembly.

The intended application is determined by the host interface and protocol support. Listed interface and protocol references include SFF-8436, QSFP+ MSA and IEEE 802.3ba. Confirm that the host firmware and port configuration support the same operating mode.

A passive DAC has no separate optical conversion stage. Its low-power, low-latency operation is useful for short equipment links, but the assembly must remain within the length and signaling mode accepted by both hosts.

The 5m (16ft) length gives QSFP-H40G-CU5M more freedom for adjacent-rack and row-end deployments. Longer copper runs need particular attention to routing weight and bend control; the DAC specification and host support must still match the intended link.

Compatibility is more than matching the QSFP+ to QSFP+ shape. This assembly is prepared for hosts expecting QSFP-H40G-CU5M and is checked for identification, stable link behavior and electrical continuity, link stability and diagnostic readouts. We recommend confirming the equipment model and software release for critical deployments or mixed-vendor installations.

This product is ordered as QSFP-H40G-CU5M in 5m (16ft). Include the equipment model and software release if you would like a pre-order compatibility review. Other lengths use different part numbers and should not be substituted into the same order line.

Production inspection covers both physical condition and a live link check. Connector ends receive individual protection, and the completed assembly is packed without tight ties or sharp bends. For multi-length projects, cartons can be separated and labelled by OEM part number to simplify installation on site.

Stock items are generally dispatched within one to three working days after order confirmation. DHL, UPS, FedEx, TNT and EMS are available for international delivery; larger consolidated orders can move by air or sea freight. Customer courier accounts and nominated forwarders are accepted.