The 400G OSFP DR4 FL Optical Transceiver is a Single-port OSFP RHS/Flat Top optical transceiver delivering 425Gbps (4x106.25Gbps) over SMF. Operating at 1310nm with a MPO-12/APC interface, it reaches 500m and is compliant with OSFP MSA Rev. 5.0, CMIS Rev. 4.0, IEEE Std 802.3bs-2017, IEEE Std 802.3ck-2022. Built-in digital diagnostics give real-time access to operating parameters, making the module easy to deploy and maintain in InfiniBand HDR fabrics, HPC clusters and AI computing networks.

Product Highlights

• Single-port OSFP RHS/Flat Top form factor, 425Gbps (4x106.25Gbps) data rate
• Wavelength: 1310nm
• Connector: MPO-12/APC
• Reach: up to 500m
• Fiber media: SMF
• DDM/DOM: Supported

The 400G OSFP DR4 FL Optical Transceiver is used in InfiniBand HDR fabrics, HPC clusters and AI computing networks, where it provides a 425Gbps (4x106.25Gbps) link over SMF up to 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. Our factory programs the compatibility coding for your switch brand before shipment and verifies each unit on real host equipment. The link runs 4x100G-PAM4 modulation, which keeps it aligned with current 400G switch silicon.

Compliance: OSFP MSA Rev. 5.0, CMIS Rev. 4.0, IEEE Std 802.3bs-2017, IEEE Std 802.3ck-2022. 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 OSFP-DR4-400G-FL. 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.

Standard packing is an anti-static bag plus blister protection, with cartons sized to keep products from moving in transit. We apply our standard labels by default; neutral packing or customer-branded labels, part number stickers and serial barcodes are all available on request.

Our product line has grown with the industry for three decades, from GBIC-era modules to today's 800G and 1.6T interconnects. If the exact configuration you need is not listed, we can usually build it: custom lengths, mixed connector breakouts, OEM branding and project-specific firmware coding are all supported.

Standard products are held in stock and usually ship within one to three working days. We dispatch worldwide by DHL, UPS, FedEx, TNT or EMS, and for bulk orders we arrange air or sea freight. Shipments can also be sent collect on your own courier account or delivered to your freight forwarder.

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.