Cisco QDD-2X400G-FR4 400G QSFP-DD Transceiver, 2x400G-FR4, 2-km Duplex SMF

Name: Cisco QDD-2X400G-FR4 400G QSFP-DD Transceiver, 2x400G-FR4, 2-km Duplex SMF
Brand: Cisco
SKU: QDD-2X400G-FR4
Price: 1116.00 USD
Availability: InStock
Rating: 5 (8 reviews)

Mfr. Part #: QDD-2X400G-FR4

Brand: Cisco

Condition: New

Skip to the end of the images gallery

Skip to the beginning of the images gallery

-7%

Was: $1,200.00

You Save: $84.00 7% OFF

$1,116.00 In Stock - Ships Worldwide Order by 2:00 PM ET for Overnight Shipping
Warranty: 90-day return/replacement

Click here to read our Return Policy for returns/replacements.
Authenticity: Original Genuine OEM

QDD-2X400G-FR4

Quantity:

Extra 5% Off at Checkout

Genuine Guarantee
Volume Pricing Available

Request Bulk Quote

Free ground shipping within the

United States

Government, Federal & Education Procurement

We support quotes, POs, stock docs, and compliance invoicing.

Email: support@buyrouterswitch.com Sam.Gov CAGE Code : 23P86

overview

specifications

faqs

reviews

overview

QDD-2X400G-FR4 Overview

CISCO QDD-2X400G-FR4 400g Qsfp-dd 2x400g-fr4, 2-km Duplex Smf Transceiver.

Need help with QDD-2X400G-FR4?

Get pricing, availability, lead time, and compatible options from our team. Chat with us live or email support@buyrouterswitch.com

specifications

Specifications

Overview

Condition	New
Brand	Cisco
Stock	In Stock

General Information

Manufacturer Part Number	QDD-2X400G-FR4
Manufacturer	CISCO
Product Name	Qsfp-dd Module

Media & Performance

Maximum Distance Supported	2 Km
Network Technology	800gbase-fr8
Maximum Data Transfer Rate	800 Gbit/s
Ethernet Technology	800 Gigabit Ethernet
Media Type Supported	Optical Fiber
Fiber Mode Supported	Single-mode

Interfaces/ports

Interfaces/ports Details	2 X Lc Duplex 800gbase-fr8 Network
Connector Type	Lc Duplex
Total Number Of Ports	2

Application/usage

Features	Digital Optical Monitoring (dom)

faqs

Frequently Asked Questions

What is the maximum reach for the Cisco QDD-2X400G-FR4 transceiver? +

The Cisco QDD-2X400G-FR4 is designed for high-speed data center interconnects and campus backbones, supporting reach up to 2 kilometers over single-mode fiber. By utilizing four parallel wavelengths, it ensures reliable signal integrity across this distance, making it an ideal choice for 400G connectivity between switches located in different rows or adjacent data center halls.

Can the QDD-2X400G-FR4 operate in a 2x400G breakout configuration? +

This module is specifically engineered to support 2x400G applications, allowing for dense connectivity within a QSFP-DD form factor. It leverages advanced optical multiplexing to deliver two independent 400G streams, enabling efficient port utilization on high-density Cisco platforms. Ensure your switch hardware supports the QSFP-DD standard and the necessary port-splitting configurations to maximize this module's throughput capabilities.

Which cable type is required for the QDD-2X400G-FR4 module? +

This transceiver utilizes an MPO-12 or similar interface compatible with single-mode fiber (SMF) cabling. Because it employs CWDM4 technology, it is essential to use high-quality OS2 single-mode patch cords to maintain the link budget. Always verify that your cabling plant meets the required return loss and insertion loss specifications to ensure stable 400G performance across the 2km distance.

Is the QDD-2X400G-FR4 compatible with my existing Cisco Nexus switches? +

Compatibility depends on your specific Cisco Nexus switch model and its support for QSFP-DD interfaces. This module is built to integrate seamlessly into Cisco’s high-performance switching ecosystem, provided the hardware port is rated for 800G total capacity or 2x400G breakout mode. You should consult the Cisco Optics-to-Device Compatibility Matrix to confirm your platform's software release supports this specific PID.

Does the QDD-2X400G-FR4 require specific cooling or airflow considerations? +

Due to the power density associated with 2x400G optics, proper thermal management is critical. The QSFP-DD form factor is designed to dissipate heat efficiently when installed in switches with adequate front-to-back or back-to-front airflow. Ensure your chassis fans are operating correctly and that blanking panels are installed in empty slots to maintain consistent internal airflow pressures and prevent thermal throttling.

How do I manage the digital optical monitoring for this module? +

The QDD-2X400G-FR4 supports Digital Optical Monitoring (DOM), which provides real-time access to operational parameters like laser bias current, transmit and receive optical power, and module temperature. You can access this telemetry data directly through the Cisco NX-OS command-line interface using the 'show interface transceiver' command, allowing for proactive health monitoring and efficient troubleshooting of the physical layer.

What optical technology powers the Cisco QDD-2X400G-FR4? +

This module utilizes Coarse Wavelength Division Multiplexing (CWDM4) technology, which aggregates multiple optical signals onto a single fiber pair. By using four distinct wavelengths in the 1310nm band, it effectively transmits 400G of data over each channel. This advanced optical modulation is essential for reducing the complexity of fiber infrastructure while maintaining the high data rates required by modern cloud-scale data centers.

What is the typical power consumption of the QDD-2X400G-FR4? +

The QDD-2X400G-FR4 is engineered for optimized power efficiency within the QSFP-DD power envelope. While specific wattage can fluctuate based on the link state and signal load, it adheres to industry standards for high-density 800G-capable optics. Reviewing your switch's power budget and hardware specifications will ensure that your power supply units can handle the cumulative draw of all installed transceiver modules.

How can I obtain a bulk quote for large quantities of QDD-2X400G-FR4 modules? +

To receive a competitive volume-based quote for the QDD-2X400G-FR4, please navigate to our 'Request a Quote' section on BuyRouterSwitch.com. Simply input the SKU and the required quantity, and our sales team will process your request promptly. We specialize in supporting large-scale enterprise deployments and are ready to provide the pricing and availability details you need for your upcoming networking projects.

Why should I choose BuyRouterSwitch.com for my Cisco optics needs? +

BuyRouterSwitch.com is a trusted source for genuine Cisco networking equipment. We focus on providing seamless procurement experiences for enterprise clients, offering transparent pricing and streamlined logistics. By choosing us for your hardware acquisition, you gain access to a reliable partner dedicated to supporting your data center infrastructure needs with authentic products and professional service that helps you stay on schedule.

Reviews