Arista Compatible 400G QSFP-DD QDD DR4 Optical Transceiver

The Arista Compatible 400G QSFP-DD QDD DR4 Optical Transceiver is a QSFP-DD optical transceiver delivering 425Gbps (4x106.25Gb/s) over SMF. Operating at 1310nm with a MPO-12/APC interface, it reaches 500m and is compliant with QSFP-DD MSA HW Rev 5.1, QSFP-DD CMIS Rev 5.0, IEEE 802.3bs. 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 (4x106.25Gb/s) data rate
• Wavelength: 1310nm
• Connector: MPO-12/APC
• Reach: up to 500m
• Fiber media: SMF
• DDM/DOM: Supported

In 400G Ethernet data center and cloud network environments, the Arista Compatible 400G QSFP-DD QDD DR4 Optical Transceiver delivers 425Gbps (4x106.25Gb/s) transmission over SMF with a reach of 500m. The MPO-12/APC interface and 1310nm optics match the standard cabling plant used in modern data halls, so existing trunks can be reused. Compatibility with Arista systems is verified in our own test lab before shipment, so the unit works out of the box as an equivalent of QDD-400G-DR4. The link runs PAM4 modulation, which keeps it aligned with current 400G switch silicon.

Compliance: QSFP-DD MSA HW Rev 5.1, QSFP-DD CMIS Rev 5.0, IEEE 802.3bs. For projects standardized on Arista hardware, this product replaces the QDD-400G-DR4 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.

Our part number for this module is QDD-DR4-400G. 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.

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.