Designed for 800G Ethernet data center and cloud network environments, the Cisco Compatible 800G QSFP-DD QDD 2FR4 Optical Transceiver provides 850Gbps (8x 106.25Gbps) throughput in a QSFP-DD form factor. It operates at 1271nm, 1291nm, 1311nm and 1331nm over SMF through a Dual Duplex LC/UPC connector and supports link lengths up to 2km. The module meets IEEE 802.3cu-2021, IEEE 802.3ck-2022, QSFP-DD MSA HW Rev 6.01, CMIS Rev 5.0 and includes digital diagnostic monitoring for live status readout.

Product Highlights

• QSFP-DD form factor, 850Gbps (8x 106.25Gbps) data rate
• Wavelength: 1271nm, 1291nm, 1311nm and 1331nm
• Connector: Dual Duplex LC/UPC
• Reach: up to 2km
• Fiber media: SMF

Network architects choose the Cisco Compatible 800G QSFP-DD QDD 2FR4 Optical Transceiver for 800G Ethernet data center and cloud network environments: it runs 850Gbps (8x 106.25Gbps) over SMF and reaches 2km. With its Dual Duplex LC/UPC optical interface, the module works directly with the SMF infrastructure already installed in most facilities. 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-2X400G-FR4. The link runs 8x100G-PAM4 modulation, which keeps it aligned with current 800G switch silicon.

This product is designed and tested to comply with IEEE 802.3cu-2021, IEEE 802.3ck-2022, QSFP-DD MSA HW Rev 6.01, CMIS Rev 5.0. It is interoperable with Cisco equipment and serves as a direct equivalent to the Cisco part number QDD-2X400G-FR4.

Order this product as QDD-2FR4-800G. 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 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.

Transceivers and cables are individually protected against static and dust, then consolidated into sturdy cartons suitable for international courier shipment. For larger orders we shrink-wrap and strap cartons onto pallets. Tell us your warehouse or retail requirements and we will pack accordingly.

Working directly with the manufacturer means no middleman limits. We support OEM and ODM projects, custom cable assemblies, alternative packaging and compatibility coding for major equipment vendors, with engineering support from the same team that designs our standard products.

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.