Overview

40G QSFP+ to QSFP+ Direct Attach Cable (DAC) Series provides a reliable, cost-efficient solution for high-speed 40G connectivity in data centers and enterprise networks. Designed for short-reach applications, these passive copper cables support data rates up to 40Gbps (4x10Gbps lanes) with ultra-low latency, ensuring seamless transmission over distances up to 5 meters.

Engineered for simplicity, the series eliminates the need for optical transceivers, reducing power consumption and infrastructure costs. Its plug-and-play design enables quick deployment, while robust shielding minimizes electromagnetic interference (EMI) in high-density environments. Backward compatible with 10G/40G QSFP+ systems, the cables offer flexibility for hybrid network upgrades or legacy device integration.

Ideal for interconnecting switches, servers, and storage arrays, the 40G QSFP+ DAC Series delivers a durable, energy-saving alternative to fiber optics. Perfect for cloud computing, virtualization, and high-performance computing (HPC), it balances performance, affordability, and scalability for modern 40G network architectures.

Features

Compliant QSFP MSA specifications

Fully compatible with IEEE802.3ba and Infiniband QDR specifications

40Gb/s total bandwidth

4 independent duplex channels operating at 10Gbps, also support for 2.5Gbps, 5Gbps data rates

100 ohm differential impedance system

Single 3.3V power supply, low power consumption, <1.5W

Low Near-End Crosstalk(NEXT)

Operating case temperature: -40 to 85°C

All-metal housing for superior EMI performance

Precision process control for minimization of pair-to-pair skew

AC coupling of PECL signals

EEPROM for cable signature & system communications

30 AWG to 24 AWG cable sizes available

RoHS compliant