The Arista Compatible 400G QSFP-DD QDD SR4 Optical Transceiver is a QSFP-DD optical transceiver delivering 400Gbps over MMF. Operating at 850nm with a MPO-12/APC interface, it reaches 30m@OM3/50m@OM4 and is compliant with QSFP-DD MSA, CMIS Rev5.0, IEEE 802.3df-2024. 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, 400Gbps data rate
• Wavelength: 850nm
• Connector: MPO-12/APC
• Reach: up to 30m@OM3/50m@OM4
• Fiber media: MMF
• DDM/DOM: Supported

Built for 400G Ethernet data center and cloud network environments, this QSFP-DD module carries 400Gbps over MMF up to 30m@OM3/50m@OM4 per link. Digital diagnostics report transmit power, receive power and temperature in real time, which simplifies commissioning and ongoing maintenance. Our factory programs the compatibility coding for your switch brand before shipment and verifies each unit on real host equipment. The link runs 8x50G-PAM4 modulation, which keeps it aligned with current 400G switch silicon.

Standards compliance covers QSFP-DD MSA, CMIS Rev5.0, IEEE 802.3df-2024. The unit works in any equipment with a standard QSFP-DD interface; if your network uses a specific vendor's coding, tell us the switch model and we will program and verify it before delivery.

Order this product as QDD-SR4-400G. 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.

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.

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.