Cisco Compatible 400G QSFP-DD QDD DR4 Si Optical Transceiver

The Cisco Compatible 400G QSFP-DD QDD DR4 Si Optical Transceiver is a QSFP-DD optical transceiver delivering 425Gbps (4x106.25Gb/s) over SMF. Operating at 1310nm with a MPO-12 (APC) interface, it reaches 500m and is compliant with QSFP-DD MSA, IEEE 802.3bs, CMIS 4.1. Built-in digital diagnostics give real-time access to operating parameters, making the module easy to deploy and maintain in 400G Ethernet data center and cloud network environments.

Product Highlights

• QSFP-DD form factor, 425Gbps (4x106.25Gb/s) data rate
• Wavelength: 1310nm
• Connector: MPO-12 (APC)
• Reach: up to 500m
• Fiber media: SMF
• DDM/DOM: Supported

Network architects choose the Cisco Compatible 400G QSFP-DD QDD DR4 Si Optical Transceiver for 400G Ethernet data center and cloud network environments: it runs 425Gbps (4x106.25Gb/s) over SMF and reaches 500m. Digital diagnostics report transmit power, receive power and temperature in real time, which simplifies commissioning and ongoing maintenance. It is interoperable with Cisco platforms and replaces the Cisco part QDD-400G-DR4-S directly.

This product is designed and tested to comply with QSFP-DD MSA, IEEE 802.3bs, CMIS 4.1. It is interoperable with Cisco equipment and serves as a direct equivalent to the Cisco part number QDD-400G-DR4-S.

Order this product as QDD-DR4-400G-SI. Common models are stocked for fast dispatch. We can supply the module with neutral or customer-branded labels, and compatibility coding for a specific equipment vendor can be added at no extra process step.

We ship to customers around the world every week. Express couriers handle most orders door to door in a few days; larger consignments go by air or sea to keep freight costs down. Tracking information is provided for every shipment, and we are flexible on shipping accounts and forwarders.

We do not ship untested stock. Each transceiver and cable is powered up in our test racks, checked for link stability, transmit power, receiver sensitivity and diagnostic readouts, and only then packed for delivery. This factory-level testing is one reason network integrators keep reordering from us year after year.

Each unit is sealed in an anti-static bag, cushioned in a blister tray and boxed in an export-grade carton. Outer cartons carry handling marks and can be palletized for air or sea freight. If your project requires retail boxes, barcodes or your own brand on the label, we can arrange that as well.

Because we are the factory, customization is straightforward: non-standard lengths, different jacket materials, specific polarity or breakout wiring, and compatibility programming for particular switch brands are all routine work for us. Small trial orders are accepted so you can verify quality before scaling up.