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1. 8 optical channels, dual duplex LC connectors 2. Support 800G to 2x 400G-FR4 QSFP-DD application, no breakout cables required 3. 8x 106.25G PAM4 modulation 4. EML + PIN Laser 5. Max power consumption ≤17WSee more
Arista QDD-800G-2FR4 Compatible 2x 400G FR4 QSFP-DD 800G transceiver module supports a max data rate of 850Gbps. It enables the fiber link of 2km over single-mode fiber (SMF) with dual duplex LC connectors. The 800 Gigabit Ethernet signal is carried over 4 wavelengths at 1271nm, 1291nm, 1311nm, and 1331nm. QSFPTEK manufactured 2x 400GBASE FR4 QSFP-DD complies with IEEE 802.3cu-2021, IEEE P802.3ck D3.0, QSFP-DD MSA HW Rev 6.01, CMIS Rev 5.0. DDM (digital diagnostics monitoring) function is supported on the 800G fiber optic transceiver to achieve real-time operating parameters monitoring. Adopting the Pulse-amplitude Modulation (PAM4) modulation, the FR4 QSFP-DD achieves 800 Gigabit Ethernet through 8x 106.25 PAM4 Retimed 2x400GAUI-4 C2M electrical interface. The 800G FR4 QSFP-DD is widely used for gigabit Ethernet, data centers, and 800G to 2x 400G applications.
Scenario 1: 800G to 800G Direct Connectivity
Scenario 2: 800G to 2x 400GE Connectivity

Utilize 8x electrial lanes and 8x optical lanes modulated at 100G PAM-4 per lane. On the output side, it convert 8x 106.25Gb/s electrical signal to 8x 106.25Gb/s optical signals. On the receiver side, it convert 8x 100Gb/s optical signal to 8x 100Gb/s electrical signals.

The QSFP-DD-800G-2FR4 module is designed with dual duplex LC connectors, while each connector can connect to a physically separate 400G FR4 module via an LC OS2 duplex single-mode fiber. This enables 800G to 2x 400G breakout links without the need for using breakout fiber optic cables.

Every module is quality tested for compatibility in the multi-brand switches environment, which guarantees flawless operations.

Every unit sold undergoes rigorous quality testing, to ensure compatibility in the target switch environment, guaranteeing perfect operation.

Every module is qualified through rigorous procedures and advanced equipment to ensure high-quality and reliable optical devices for you.


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Compatible Arista
Transceivers type QDD-800G-2FR4 | 2km | Dual Duplex LC/UPC
After installation, the module was identified correctly by our monitoring system, making it easy to track inventory and monitor link status. Having accurate hardware information available is a small detail that really improves day-to-day management.
Transceivers typeQDD-800G-2FR4 | 2km | Dual Duplex LC/UPC
CompatibleArista
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0
This module was delivered exactly as specified in our purchase order, which made receiving and inventory verification much easier. Everything matched the documentation, so we were able to move directly into deployment without additional checks.
Transceivers typeQDD-800G-2FR4 | 2km | Dual Duplex LC/UPC
CompatibleArista
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0
Signal attenuation over our 1.5km run was minimal and bit error rates stayed clean. Really smooth deployment all around.
Transceivers typeQDD-800G-2FR4 | 2km | Dual Duplex LC/UPC
CompatibleArista
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0
We evaluated several 800G transceivers before making a purchase and ultimately selected this one based on the available documentation and technical specifications. The module arrived in excellent condition, installation was uncomplicated, and the optical link performed consistently throughout our verification process. Overall, the buying experience and product quality met our expectations.
Transceivers typeQDD-800G-2FR4 | 2km | Dual Duplex LC/UPC
CompatibleArista
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0
One thing I liked was that there were no surprises. The specifications matched the product we received, the module was cleanly manufactured, and our validation tests were completed without any unexpected issues. That's all we really ask for when sourcing optics.
Transceivers typeQDD-800G-2FR4 | 2km | Dual Duplex LC/UPC
CompatibleArista
Helpful
0
Our purchasing team was mainly focused on reducing the overall networking budget. These modules helped us achieve that without sacrificing reliability. After installation, they performed just as well as some higher-priced alternatives we've used previously.
Transceivers typeQDD-800G-2FR4 | 2km | Dual Duplex LC/UPC
CompatibleArista
Helpful
0
The labeling on the module is clear and easy to read, including the model and interface information. It saved us from double-checking each transceiver during installation, especially when working with different module types in the same rack.
Transceivers typeQDD-800G-2FR4 | 2km | Dual Duplex LC/UPC
CompatibleArista
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0
What impressed me most was the delivery speed. The modules arrived earlier than expected, which helped us stay on schedule for a network upgrade.
Transceivers typeQDD-800G-2FR4 | 2km | Dual Duplex LC/UPC
CompatibleArista
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0
We chose this 800G 2FR4 QSFP-DD module mainly for its long-reach capability, and it has proven very effective in 2km SMF links. The dual-port design offers flexible network layout options.
Transceivers typeQDD-800G-2FR4 | 2km | Dual Duplex LC/UPC
CompatibleArista
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0
Their inventory availability was much better than other suppliers we checked. We were able to get what we needed without a long wait.
Transceivers typeQDD-800G-2FR4 | 2km | Dual Duplex LC/UPC
CompatibleArista
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0