Cisco Compatible 400G QSFP-DD QDD SR4.2 Optical Transceiver

The Cisco Compatible 400G QSFP-DD QDD SR4.2 Optical Transceiver is a QSFP-DD optical transceiver delivering 425Gbps over MMF. Operating at 850nm,910nm with a MTP/MPO-12 (UPC) interface, it reaches 70m@OM3/150m@OM5 and is compliant with QSFP-DD MSA, IEEE 802.3-2015. 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 data rate
• Wavelength: 850nm,910nm
• Connector: MTP/MPO-12 (UPC)
• Reach: up to 70m@OM3/150m@OM5
• Fiber media: MMF
• DDM/DOM: Supported

Built for 400G Ethernet data center and cloud network environments, this QSFP-DD module carries 425Gbps over MMF up to 70m@OM3/150m@OM5 per link. Digital diagnostics report transmit power, receive power and temperature in real time, which simplifies commissioning and ongoing maintenance. For networks standardized on Cisco hardware, it is a drop-in equivalent of the QDD-400G-SR4.2-BD.

This product is designed and tested to comply with QSFP-DD MSA, IEEE 802.3-2015. It is interoperable with Cisco equipment and serves as a direct equivalent to the Cisco part number QDD-400G-SR4.2-BD.

To order, quote QDD-SR4.2-400G together with your quantity. Stock items ship quickly; for OEM orders we support custom labels, retail packing and vendor-specific coding, all handled in our own factory.

Goods are normally sent by courier such as DHL, UPS, FedEx, TNT or EMS; air and sea freight are also available on request. Commonly used items are kept in stock for immediate shipment, and out-of-stock items are usually delivered within a few working days. We can also ship on your courier account or hand goods to your appointed forwarder.

Before any product leaves our factory it goes through optical performance testing, compatibility verification on real switch platforms and a final visual inspection. Our in-house test lab holds a wide range of current and legacy switches from major brands, so interoperability is proven on the actual equipment your network uses rather than assumed from paper specifications.

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.

We have manufactured fiber optic connectivity products since 1995 and run our own production lines in Shenzhen. Beyond the standard catalog we build to order: special cable lengths, custom connector combinations, vendor-specific compatibility coding and private labeling. Send us your requirement and our engineers will quote a practical solution.