Cisco Compatible 400G QSFP-DD QDD ER8 Optical Transceiver

The Cisco Compatible 400G QSFP-DD QDD ER8 Optical Transceiver is a QSFP-DD optical transceiver delivering 425Gbps over SMF. Operating at 1310nm with a Duplex LC/UPC interface, it reaches 40km and is compliant with QSFP-DD MSA Compliant. 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: 1310nm
• Connector: Duplex LC/UPC
• Reach: up to 40km
• Fiber media: SMF
• DDM/DOM: Supported

Network architects choose the Cisco Compatible 400G QSFP-DD QDD ER8 Optical Transceiver for 400G Ethernet data center and cloud network environments: it runs 425Gbps over SMF and reaches 40km. With its Duplex LC/UPC optical interface, the module works directly with the SMF infrastructure already installed in most facilities. If your project needs a specific vendor coding or custom label, our production line handles it as a routine step before packing. The link runs 8x50G-PAM4 modulation, which keeps it aligned with current 400G switch silicon.

Compliance: QSFP-DD MSA Compliant. Every unit's EEPROM coding and link behavior are verified on real host equipment in our lab, so what arrives at your site is ready to use.

Our part number for this module is QDD-ER8-400G. 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.

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.

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.

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.