The Cisco Compatible 400G QSFP-DD QDD SR4.2 Optical Transceiver is a hot-pluggable QSFP-DD transceiver rated at 425Gbps. Using a MTP/MPO-12 (UPC) optical interface over MMF at 850nm,910nm, it covers transmission distances up to 70m@OM3/150m@OM5. Compliance with QSFP-DD MSA, IEEE 802.3-2015, together with integrated diagnostic monitoring, makes it a dependable choice for 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

Network architects choose the Cisco Compatible 400G QSFP-DD QDD SR4.2 Optical Transceiver for 400G Ethernet data center and cloud network environments: it runs 425Gbps over MMF and reaches 70m@OM3/150m@OM5. The MTP/MPO-12 (UPC) interface and 850nm,910nm optics match the standard cabling plant used in modern data halls, so existing trunks can be reused. Compatibility with Cisco systems is verified in our own test lab before shipment, so the unit works out of the box as an equivalent of 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.

Our part number for this module is QDD-SR4.2-400G. When ordering, just let us know the quantity and whether you need the compatibility coding for a particular switch brand; labeling and packaging can also follow your channel requirements.

Standard products are held in stock and usually ship within one to three working days. We dispatch worldwide by DHL, UPS, FedEx, TNT or EMS, and for bulk orders we arrange air or sea freight. Shipments can also be sent collect on your own courier account or delivered to your freight 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.

Products are first packed into blister trays or self-sealed bags and then into cartons. Standard labels and marks are applied by default, and customized packing and labeling are available on request.

Our product line has grown with the industry for three decades, from GBIC-era modules to today's 800G and 1.6T interconnects. If the exact configuration you need is not listed, we can usually build it: custom lengths, mixed connector breakouts, OEM branding and project-specific firmware coding are all supported.