DAC

CAB-Q-Q-3M,Arista compatible DAC,40GBASE-CR4 QSFP+ to QSFP+ Direct Attached Cable 3 Meter

Rate40GbpsReach3mWavelengthN/AInterfaceN/A
Fiberland part number
FLD-CAB-Q-Q-3M

Key Specifications

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Form TypeDAC QSFP+

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Technical Specifications

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14 specifications shown
Vendor NameFiberlandForm TypeDAC QSFP+
Data Rate40GbpsWavelengthN/A
Reach3mOptical InterfaceN/A
Media TypeN/ADDM SupportN/A
Commercial Temp.0~70℃Industrial Temp.N/A
Compatible BrandsAristaCertificatesCE,FCC,ROHS,REACH
HS Code8517706000Warranty3 Years

Product Compatibility Mapping

Cross-reference the original manufacturer part number with the corresponding Fiberland part number before confirming the target device and firmware.

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A part-number cross-reference is a model-selection starting point, not a blanket device guarantee. Final fit depends on the exact device, firmware or OS, target port and requested coding profile.

See Where This Product Fits in the Network

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Application planning

Optical Transceiver Application and Link Map

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Optical transceiver application diagram covering data center, DCI, campus, server and metro networks

Review the Quality-Control and Test Flow

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Testing and quality

Quality Control and Test Flow

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Quality control flow covering material, firmware, optical, temperature, compatibility and final QA checks

Frequently Asked Questions

Answers to common compatibility, installation and troubleshooting questions.

Why is the transceiver recognized but DDM/DOM information is missing?

The module may be recognized while diagnostic monitoring is not fully supported by the host platform or compatibility profile. Check whether both the transceiver and network device support DDM/DOM for that interface.

Why does the link work at one end but show an error at the other end?

Each transceiver must be compatible with its own host device. In a mixed-vendor link, one end may be correctly coded while the transceiver at the opposite end is not fully compatible with its switch or router.

Why does my compatible transceiver show low RX optical power?

Low receive power can result from excessive fiber loss, dirty connectors, damaged fiber, excessive link distance, incorrect wavelength pairing, or insufficient transmit power from the remote transceiver. Compare the measured RX power with the module's specified receiver range.

How is a transceiver made compatible with a specific switch brand?

Compatibility is typically achieved through EEPROM programming, identification parameters, interface compliance, and platform-specific coding so that the host device can correctly recognize and communicate with the transceiver.

What happens if a transceiver has the wrong compatibility coding?

The device may reject the module, display an unsupported-transceiver warning, fail to establish a link, or provide incomplete monitoring information.

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Engineering resources

Technical proof for faster project review

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