400G QSFP-DD to 4 x 100G QSFP56 Active Copper Breakout DAC Cable

The 400G QSFP-DD to 4 x 100G QSFP56 Active Copper Breakout DAC Cable is a active twinax direct attach copper cable with QSFP-DD to 4xQSFP56, supporting 400Gb/s links over a length of 3-7m. Active electronics inside the connectors extend the usable reach compared with passive copper while keeping power draw low. It is a cost effective, low latency interconnect for 400G Ethernet data center and cloud network environments, and complies with QSFP-DD MSA SFF-8679 SFF-8636.

Product Highlights

• QSFP-DD to 4xQSFP56
• Data rate: 400Gb/s
• Cable type: Active Twinax
• Length: 3-7m
• Operating temperature: 0 to 70°C (32 to 158°F)

The 400G QSFP-DD to 4 x 100G QSFP56 Active Copper Breakout DAC Cable connects QSFP-DD to 4xQSFP56 ports at 400Gb/s in 400G Ethernet data center and cloud network environments. This unit is supplied at 3-7m. The breakout design lets one high speed port feed 4xQSFP56, which raises port utilization and simplifies cabling in dense rows. If your project needs a specific vendor coding or custom label, our production line handles it as a routine step before packing.

Standards compliance covers QSFP-DD MSA SFF-8679 SFF-8636. The unit works in any equipment with a standard QSFP-DD to 4xQSFP56 interface; if your network uses a specific vendor's coding, tell us the switch model and we will program and verify it before delivery.

This model is supplied at 3-7m under part number QDD-400G-4QACxxx. Other lengths of the same assembly can be produced on request.

Our warehouse keeps fast-moving transceivers and cables ready for same-week dispatch. Courier, air freight and sea freight options are all available depending on your budget and schedule, and we consolidate multiple items into one shipment whenever it saves you cost.

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.

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.

We have manufactured fiber optic connectivity products since 1995 and run our own production lines in Shenzhen. Beyond the standard catalog we build to order: special cable lengths, custom connector combinations, vendor-specific compatibility coding and private labeling. Send us your requirement and our engineers will quote a practical solution.