QSFP-H40G-CU7MCisco QSFP-H40G-CU7M Compatible 40G QSFP+ Passive Copper Cable, 7m (23ft)
This 7m (23ft) QSFP-H40G-CU7M compatible assembly provides 40G DAC connectivity for Cisco interfaces in a QSFP+ to QSFP+ configuration. It is supplied as one complete cable, with specifications and installation guidance that help high-density racks balance reach, connector access and airflow while retaining the exact OEM reference required by the host.
OEM Part Number: QSFP-H40G-CU7MHT Part Number: QSFP-H40G-CU7M
Product Highlights
- Compatible alternative to Cisco QSFP-H40G-CU7M
- 40G connectivity at 40Gbps
- Interface configuration: QSFP+ to QSFP+
- Fixed length and part number: 7m (23ft), QSFP-H40G-CU7M
- Conductor specification: 26AWG
- Minimum bend radius: 47.5mm
Specifications
| HT Part Number | QSFP-H40G-CU7M |
|---|---|
| Cisco Compatible | QSFP-H40G-CU7M |
| Manufacturer | HT |
| Connector Type | QSFP+ to QSFP+ |
| Max Data Rate | 40Gbps |
| Minimum Bend Radius | 47.5mm |
| Wire AWG | 26AWG |
| Cable Length | 7m (22.97ft) |
| Jacket Material | PVC (OFNR) |
| Temperature | 0 to 70°C (32 to 158°F) |
| Protocols | SFF-8436, QSFP+ MSA and IEEE 802.3ba |
Cable Construction and Routing
This assembly uses 26AWG conductors, PVC (OFNR) jacket, minimum bend radius 47.5mm. 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.
Passive Copper Operation
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.
Length Selection and Installation Planning
The extended 7m (23ft) configuration gives QSFP-H40G-CU7M a specific place in the family reach range. It should not be treated as a universal substitute for every shorter order code. Match it to a documented route, protect the complete copper assembly and both connector housings during handling and retain the part-number label for later maintenance. The next shorter verified assembly is QSFP-H40G-CU5M at 5m (16ft), which is the better comparison when the managed route leaves substantial unused cable.
Position Within the Length Range
QSFP-H40G-CU7M is the longest of 7 verified length options in this family. Compared with QSFP-H40G-CU5M at 5m (16ft), it provides 2m of additional reach for a longer vertical drop, a wider rack or an adjacent-cabinet route. Confirm that the complete path requires this length, because unused slack still needs supported, bend-safe storage.
High-Density Rack Integration
In a densely populated rack, connector access and airflow are part of the link design. Choose the shortest length that follows the managed path comfortably, avoid tight bundles around the connector housings and preserve room for latch operation. Where power consumption is listed, include every populated interface in the host thermal budget rather than assessing a single cable in isolation. For this assembly, the listed conductor specification is 26AWG; the minimum bend radius is 47.5mm; the jacket material is PVC (OFNR).
Network and Protocol Considerations
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.
Quality Assurance and Packaging
Each assembly receives a visual connector inspection and functional link check before it is coiled and protected. Packaging is selected to avoid compressing the cable into a tight bundle, and optional rack-based labels help maintain an orderly installation when many identical interfaces are populated together. Volume orders can include customer references on the labels and carton list.
Ordering Information
Provide the exact part number, length, quantity and target interface density. For multi-rack projects, list each length separately and identify any preferred carton grouping. Host model and software information can be included for a compatibility review before production or dispatch. Keep QSFP-H40G-CU7M associated with 7m (23ft) throughout the order and receiving record.
Cisco Compatibility and Factory Testing
The assembly is evaluated for host recognition and stable link operation, with diagnostics checked where the interface provides them. This approach verifies more than electrical or optical continuity. Exact platform and firmware information remains valuable in high-density deployments because port mode and qualification policy can differ within the same connector family. Both connectors are examined before the operating test, which includes link stability and diagnostic indications.
Frequently Asked Questions
Is this an original Cisco cable?
No. It is an HT-manufactured compatible alternative for equipment that specifies Cisco QSFP-H40G-CU7M.
Does this order code cover multiple lengths?
No. QSFP-H40G-CU7M refers here to 7m (23ft). Every other verified length has a separate part number and page in the length list.
Are separate transceivers or patch leads required?
No. This is one complete direct-attach assembly. The ends are not detachable modules and should not be separated from the cable.
Can excess cable be folded into a compact bundle?
No. Use a supported, bend-safe service loop and observe the listed minimum bend radius. Do not crease the cable or tighten ties around the connector boots.
Shipping and Lead Time
Available stock is normally prepared for dispatch within one to three working days, while larger production requirements are scheduled with the order. International express, air cargo and sea freight can be selected according to destination and carton volume; customer courier accounts and nominated forwarders are also accepted.
