OptoSpan 40G QSFP+ to 4xSFP+ DAC Breakout Direct Attach Cable 3m
Best high-speed connectivity for data center network upgrades.
This high-performance 3-meter QSFP+ Direct Attach Cable (DAC) offers a cost-effective connectivity solution essential for modern 40G data center environments. It delivers four independent, error-free data channels over copper for 40Gbps point-to-point applications. Manufactured with premium components and PVC, this passive copper cable is individually serialized, pre-programmed, and rigorously tested to guarantee 100% compliance with Cisco QSFP-H40G-CU3M. It supports aggregate data rates up to 40 Gb/s while maintaining low power consumption, making it an efficient choice for high-density networking.
$82.50
Owner Satisfaction
4.7
/ 5
Category Rank
74
/ 6543
#74 in Network Cables
Price vs Category Average
-77%
Below average
Cable Type
Direct Attach Cable (DAC)
/ Direct Attach Cable (DAC)
Who it's for
- Network engineers maximizing switch port capacity
- Budget-conscious IT managers minimizing infrastructure expenses
- Data center operators requiring high-speed, low-latency connectivity
Who should skip it
- IT professionals using hardware with strict vendor-specific coding requirements
- System architects planning connections across distant server racks
- Technicians managing airflow in densely populated server cabinets
Performance breakdown
Data throughput
Delivers consistent 40Gbps performance for demanding high-density data center environments.
Compatibility assurance
Pre-programmed to ensure seamless integration with Cisco networking hardware.
Power efficiency
Minimal power draw helps reduce overall cooling and energy overhead costs.
Build durability
Molded boots and robust PVC jacket provide reliable protection for daily use.
Signal integrity
Engineered for error-free transmission across all four independent data channels.
Installation flexibility
Three-meter length offers the perfect reach for standard rack-to-rack connectivity.
Key Specs
Cable Type
Direct Attach Cable (DAC)
Bandwidth/Data Rate
40G / 40 Gbps
Length
3 Meters (9.84 feet)
Connector Type
QSFP+
Conductor Material
Copper
Compatibility
Cisco QSFP-H40G-CU3M
Certifications
QSFP MSA, TAA
Power Consumption
0.02 W (typical)
Features
- Supports 40 Gigabit Ethernet standards
- Utilizes four independent full-duplex channels
- Guaranteed compatibility via pre-programming
- Low power consumption for efficiency
- Ideal for hybrid link lengths
- Copper Direct Attach Cable
- Cisco Compatible
What customers say
Customers consistently praise the exceptional reliability and simple setup of this DAC cable. It connects instantly, maintaining stable 40G links without fail, proving itself a dependable choice for demanding data center needs. Reviewers also emphasize the outstanding value, noting it offers a cost effective, high performance alternative to costly OEM equipment. This blend of robust quality and affordability makes it a highly recommended networking solution for reliable breakout connectivity.
Know before you buy
Yes, this cable is specifically pre-programmed to be 100% compatible with the Cisco QSFP-H40G-CU3M standard, ensuring seamless integration with your Cisco networking equipment.
Yes, this is a breakout cable. It allows you to connect a single 40G QSFP+ port on a switch to four individual 10G SFP+ ports on other devices, effectively splitting the bandwidth.
No, this is a passive copper cable. It draws negligible power—typically only 0.02 W—directly from the host ports, making it an extremely energy-efficient solution for your data center.
This cable is designed for a fixed length of 3 meters (9.84 feet). Because it is a passive copper DAC, it is intended for short-reach, point-to-point connections within a rack or between adjacent racks.
No, this cable features a standard PVC jacket rated for general-purpose (CM) use. It is not plenum-rated and is not intended for outdoor environments or air-handling spaces.
No, this cable does not support Power over Ethernet. It is designed strictly for high-speed data transmission between networking hardware.
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