Juniper QDD-2X400G-D-1M QSFP-DD800 to 2 x 400G DAC | 800G Splitter

Consolidate high-speed connectivity without adding optical complexity. The Juniper QDD-2X400G-D-1M direct attach copper cable breaks a single QSFP-DD800 port into two 400G QSFP112 connections, making it a practical fit for breakout architectures in tightly packed racks. At 1 m, it is designed for short-reach links where signal integrity, cost control, and cable management all matter. This cable is well suited to environments that need to turn one high-capacity port into two independent 400G paths for leaf-spine fabrics, top-of-rack aggregation, or adjacent switch-to-server interconnects. By staying in copper, it avoids the added expense and power draw of optics for very short runs while preserving the deterministic behavior infrastructure teams expect from direct attach media. For teams standardizing on Juniper hardware, this DAC offers a clean way to extend port flexibility without changing the physical footprint of the rack. It is a straightforward choice when you need dense, short-distance connectivity and want to keep the design simple, predictable, and serviceable.