Cable breakout Direct Attach pasivo QSFP+ 40G a 4x10G SFP+ BlueLAN, 5 m, 26 AWG, compatible con NVIDIA L45593-D178-B50 L45593-D178-B50-BL

Data center technicians connecting a 40GbE QSFP+ port to four separate 10GbE SFP+ servers or switches will appreciate this passive direct attach breakout cable. It splits one 40G QSFP+ interface into four independent 10G SFP+ links without any active electronics, keeping latency at zero and power draw at 0W.

Key specifications

• Connector A: QSFP+ (40GBASE-CR4)
• Connector B: 4x SFP+ (10GBASE-CR)
• Cable length: 5 m
• Wire gauge: 26 AWG
• Impedance: 100 Ohm
• Compatibility: NVIDIA L45593-D178-B50

Why choose it

Because it is a passive twinax copper assembly, it introduces no signal processing delay and consumes no power. The 26 AWG conductors and 100 Ohm impedance maintain signal integrity across the full 5-meter run, making it reliable for short-reach, high-density rack connections.

Ideal use cases

• Linking a 40G switch to four 10G servers in the same rack
• High-performance computing clusters where low latency matters
• Cost-effective breakout for top-of-rack switching

Good to know

The cable is hot-pluggable and complies with SFF-8436 (QSFP+) and SFF-8431 (SFP+) specifications. It is designed for use with NVIDIA equipment that accepts the L45593-D178-B50 part number.