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Direct Attach Copper
A Passive Direct Attach Copper (DAC) cable is a Twinaxial, “Twinax”, copper cable. It is similar to a coaxial cable but has two inner conductors instead of one. Approved Networks’ DAC cables are ideal for shorter top-of-rack (or rack-to-rack) runs. DACs are the preferred way to interconnect inside server racks, especially for high-speed links from 10G, 25G, 40G, 56G, 100G, 200G, to 400G. This includes hyperscale, enterprise, storage, and many high-performance computing installations.
All Approved Networks’ DAC cables are tested in our state-of-the-art facilities to ensure complete signal integrity, performance, and compatibility. They come with Limited Lifetime Warranties and are part of the integrated Serial Number Tracking System for quality management.
Why Choose Passive Direct Attach Copper?
A passive DAC cable carries an Ethernet signal over a short length (typically under five meters) of copper with no additional components to boost the signal. The host networking equipment must support the signal processing functions for a passive DAC to work. When a DAC is inserted, networking gear that is compatible with passive DACs reads the module type so the signal conditioning can be activated. Today, 98% of the market utilizes passive DACs for transmissions of seven meters and under, but this depends on the data rate.
Why Choose Passive Direct Attach Breakout?
A passive DAC breakout cable consists of a shielded Twinax copper cable with pluggable connectors on either end. This includes SFP+, SFP28, QSFP+, QSFP28, QSFP-DD, and OSFP. Being a breakout, they have one form factor transceiver on one end, and 2 to 4 transceivers on the other end. DACs are ideal for transmitting data between multiple devices, or when directed to multiple ports. Our DAC breakouts vary depending on form factor and data rates, and are offered at up to seven meters in length.
Direct Attach Copper Benefits
Product Offerings
Explore high-speed DAC cables designed for low-latency, cost-effective connectivity within data centers and short-reach environments. These reliable solutions reduce power consumption and simplify network architecture while maintaining high performance.
No Cost Evaluations
Approved takes pride in providing reliable, high-quality solutions for optical connectivity. Our evaluation program allows Approved Networks to loan your organization our products for testing and evaluation purposes for 60 days.
