Cisco QSFP-4 x 10G-AC9M Compatible 40G QSFP+ to 4 x 10G SFP+ Active Copper Breakout Cable, 9m (29ft)
For a direct equipment connection requiring Cisco QSFP-4 x 10G-AC9M, this page supplies the 9m (29ft) version with QSFP+ to SFP+. The cable supports 40G operation and eliminates a separate module-and-patch-cord assembly. Installation, maintenance and spare-cable identification are addressed alongside the full technical details.
OEM Part Number: QSFP-4 x 10G-AC9MHT Part Number: QSFP-4 x 10G-AC9M
Product Highlights
- Compatible alternative to Cisco QSFP-4 x 10G-AC9M
- 40G connectivity at 40Gbps
- Interface configuration: QSFP+ to SFP+
- Fixed length and part number: 9m (29ft), QSFP-4 x 10G-AC9M
- Cable construction: Active Twinax
- Conductor specification: 26AWG
- Maximum power consumption: ≤1.8W
- Minimum bend radius: 44.5mm
Specifications
| HT Part Number | QSFP-4 x 10G-AC9M |
|---|---|
| Cisco Compatible | QSFP-4X10G-AC9M |
| Manufacturer | HT |
| Form Factor | QSFP+ to SFP+ |
| Max Data Rate | 40Gbps |
| Media | Copper |
| Cable Type | Active Twinax |
| Cable Length | 9m (29ft) |
| Wire AWG | 26AWG |
| Minimum Bend Radius | 44.5mm |
| Power Consumption | ≤1.8W |
| Jacket Material | PVC (OFNR) |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Protocols | SFF-8431, SFF-8432, SFF-8472 SFP+ MSA, SFF-8436 QSFP+ MSA |
Power and Thermal Planning
The rated power consumption is ≤1.8W. Include this load in the host-port power and thermal budget, especially in densely populated switches. Maintain front-panel clearance and do not bundle the cable so tightly that it obstructs airflow around the connectors.
Cable Construction and Routing
This assembly uses 26AWG conductors, PVC (OFNR) jacket, minimum bend radius 44.5mm. 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.
Network and Protocol Considerations
The intended application is determined by the host interface and protocol support. Listed interface and protocol references include SFF-8431, SFF-8432, SFF-8472 SFP+ MSA, SFF-8436 QSFP+ MSA. Confirm that the host firmware and port configuration support the same operating mode.
Breakout Port Mapping
The QSFP+ to SFP+ configuration divides the high-speed interface into multiple lower-speed connections. Verify the upstream lane assignment, downstream port speeds and breakout setting on the host before connecting the assembly. Each branch must attach to the correct remote interface.
Length Selection and Installation Planning
The extended 9m (29ft) configuration gives QSFP-4 x 10G-AC9M 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-4 x 10G-AC7M at 7m (23ft), which is the better comparison when the managed route leaves substantial unused cable.
Position Within the Length Range
QSFP-4 x 10G-AC9M is the longest of 5 verified length options in this family. Compared with QSFP-4 x 10G-AC7M at 7m (23ft), 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.
Field Installation and Maintenance
Inspect the route and both connectors before installation, then support the cable without pulling on either connector housing. During maintenance, release the latch properly rather than using the cable as a handle. Keep protection on unused ends, and if the assembly is removed for later use, coil it loosely and record its part number so the same length can be returned to service. For this assembly, the listed conductor specification is 26AWG; the minimum bend radius is 44.5mm; the stated power consumption is ≤1.8W; the jacket material is PVC (OFNR).
Quality Assurance and Packaging
The cable and both connectors are inspected before a functional link test. Connector protection and bend-safe packing reduce handling damage during transport and storage. Customer or site labels can be added for field inventories, with different lengths separated to simplify issue and return of spare assemblies. Neutral packaging and customer-specific packing documentation are available on request.
Cisco Compatibility and Factory Testing
A field-ready cable needs both correct identification and a stable operating link. Our pre-packing check therefore includes the connectors, host recognition and link behavior. For equipment with uncertain revision history, providing the host model and software release helps identify compatibility requirements before the assembly reaches the installation site. 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-4 x 10G-AC9M.
Will any matching connector operate at the same speed?
Not necessarily. Both hosts must support the stated rate, identification, lane mapping and any required breakout configuration; mechanical compatibility alone is insufficient.
What details assist a compatibility review?
Provide the equipment manufacturer, model, port type, hardware revision and software release, together with the OEM reference, required length and quantity.
How should an unused assembly be stored?
Protect both connector ends, keep the cable in a loose bend-safe coil and retain its part-number label so the length and compatibility identity remain traceable.
Ordering Information
Request the cable by its exact part number and length, and state the equipment model if compatibility confirmation is needed. Site orders can list quantities by rack or installation team. Any requested label should retain the part number so a removed or spare cable can still be identified accurately. Keep QSFP-4 x 10G-AC9M associated with 9m (29ft) throughout the order and receiving record.
Shipping and Lead Time
Available stock is generally dispatched within one to three working days after order confirmation, with production lead times advised for larger quantities. 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.
