BLACK BOX 

BLACK BOX QSFP-H40G-CU3M-BB 3M QSFP+ 40G DIRECT ATTACHED CABLE

Mfg Part Number:  QSFP-H40G-CU3M-BB  
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Price: $89.99 + Free Shipping
Quantity:
In Stock/Mfg Direct Ship
Last Updated: Mar 15, 2026
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, PO and Wire.

Cisco-Compatible Direct Attach Cable (DAC) Connects Network Equipment at Speeds up to 40 Gbps
Black Box QSFP+ Direct Attach Cables provide premium, error-free performance for data, storage, and high-performance computing (HPC) interconnectivity. They are 100% compatible with Cisco QSFP-H40G-CUxM=, allowing you to easily make connections amongst your Cisco switches, routers, and servers. Constructed for full compliance with the Multi-Source Agreement (MSA) and SFF-8436 industry standards, you can also make connections amongst your non-Cisco, 40-Gbps compatible networking equipment. Programmed, tested, and serialized to ensure compliance and functionality, Black Box Direct Attach Cables are the ideal solution for 40-Gbps Ethernet, fiber channel applications, and more.

Design, Performance, and Savings
The ultra-thin and light construction is ideal for high-density racks, placing less strain on ports and improving airflow to help cool equipment. AOCs utilize optical technology for higher bandwidth and reliable, ultra-fast data transmission over longer distances, far exceeding the 5-meter limitation where copper DAC solutions begin to fail with excessive bit error rates.

Integration and Low Latency
These cables offer a convenient, all-in-one, hot-swappable design, eliminating the need for separate transceivers and cables. Integrating the optics minimizes connection points, resulting in significantly lower latency - crucial for maintaining data integrity.

Interference Resistance and Security
The fiber optic construction provides a minimal EMI/RFI profile, ensuring superior resistance to signal interference. This is paramount for maintaining data integrity in sensitive, ultra-high-density applications. Fiber optic transmission is inherently resistant to tapping, adding a layer of physical security to your data.

Main Specification
General Information
Manufacturer Black Box Corporation
Manufacturer Part Number QSFP-H40G-CU3M-BB
Manufacturer Website Address http://www.blackbox.com
Brand Name Black Box
Product Name QSFP+ Network Cable
Product Type Network Cable
Technical Information
Cable Type QSFP+
Cable Length 9.80 ft
Connector Type on First End QSFP+ Network - Male
Connector on First End Details 1 x QSFP+ Network - Male
Connector Type on Second End QSFP+ Network - Male
Connector on Second End Details 1 x QSFP+ Network - Male
Jacket Type CL2
Device Supported Router
Device Supported Network Device
Device Supported Server
Device Supported Switch
Data Transfer Rate 40 Gbit/s
Features Hot-swappable
Physical Characteristics
Product Color Black
Jacket Material Polyvinyl Chloride (PVC)
Miscellaneous
Environmentally Friendly Yes
Environmental Compliance Restriction of Hazardous Substances (RoHS)
Country of Origin China
Warranty
Limited Warranty Lifetime
WARNING:: The plastic used in cable products can expose you to lead and lead components, chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov
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