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

Designed for 400G Ethernet data center and cloud network environments, the Cisco Compatible 400G QSFP-DD QDD DR4 Si Optical Transceiver provides 425Gbps (4x106.25Gb/s) throughput in a QSFP-DD form factor. It operates at 1310nm over SMF through a MPO-12 (APC) connector and supports link lengths up to 500m. The module meets QSFP-DD MSA, IEEE 802.3bs, CMIS 4.1 and includes digital diagnostic monitoring for live status readout.

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. With its MPO-12 (APC) optical interface, the module works directly with the SMF infrastructure already installed in most facilities. For networks standardized on Cisco hardware, it is a drop-in equivalent of the QDD-400G-DR4-S.

Compliance: QSFP-DD MSA, IEEE 802.3bs, CMIS 4.1. For projects standardized on Cisco hardware, this product replaces the QDD-400G-DR4-S directly, with identical fit and function. 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.

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.

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.

Default packaging is simple and protective: sealed bag, blister tray, export carton. For OEM customers we also offer white-label packing, custom printed boxes and per-unit labeling with your own part numbers, so the goods can go straight into your sales channel.

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.