Direct Attach Copper Cable SFP28 to SFP28 25Gbps 0.5 Meter

In this review of the Direct Attach Copper Cable SFP28 to SFP28 25Gbps 0.5 Meter the bottom line is straightforward: this compact DAC is for network engineers and system builders who need a low-latency, fixed-length copper link between SFP28 ports. It delivers the primary benefit of a direct, short-reach 25Gbps connection with minimal configuration and negligible signal conversion overhead. The reviewer found it most valuable in top-of-rack and adjacent-rack links where short distance, reliability, and cost per port matter more than fiber flexibility.

Key Features

• 25Gbps SFP28 link: Provides a full 25 gigabit per second electrical connection between two SFP28 ports for high-throughput server or switch interconnects.
• 0.5 meter length: The half meter fixed length keeps cable management neat in dense racks and reduces excess cable loop and crosstalk.
• Direct attach copper design: Eliminates the need for transceivers and optical components, simplifying installation and lowering per-link cost.
• SFP28 connector compatibility: Fits directly into standard SFP28 ports for straightforward plug-and-play use in compatible hardware.
• Low power and latency: Copper DACs typically consume less power than active modules and add negligible latency to short interconnects.

Who It's For

This product is aimed at data center technicians, network administrators, and small enterprise IT teams that regularly connect SFP28-capable switches, NICs, and storage appliances over short distances. It is particularly useful in environments where predictable performance and simple deployment outweigh the flexibility of fiber.

Customers who need longer reach, strandability between buildings, or future-proofing for longer fiber runs should consider fiber transceivers and patching instead. Likewise, anyone using non-SFP28 ports or proprietary vendor-locked interfaces should verify compatibility before purchase.

Pros & Cons

Pros

• Reliable 25Gbps electrical connection suitable for server-to-switch and switch-to-switch short links.
• Compact 0.5 meter length simplifies routing in crowded racks and avoids excess cabling.
• Plug-and-play SFP28 fit makes installation fast with minimal configuration.

Cons

• Fixed short length limits use to adjacent or same-rack connections and is not suitable for longer runs.

Specifications

Model	UC-DAC-SFP28
Connector type	SFP28 to SFP28
Data rate	25Gbps
Cable type	Direct attach copper
Length	0.5 meter
Brand	Ubiquiti Networks

Our Verdict

For short-reach, high-throughput interconnects the UC-DAC-SFP28 is a clear practical choice: it pairs standard SFP28 ports with low latency and minimal setup, making it a cost-effective solution for rack-level connectivity. Buy it if you need a dependable 0.5 meter 25Gbps copper link; choose fiber if you need longer reach or more flexible cabling options.

Frequently Asked Questions

Is this cable plug-and-play?
Yes. It uses SFP28 connectors and is designed for direct insertion into compatible SFP28 ports without additional optics or configuration.

What is the maximum supported distance?
The cable is a fixed 0.5 meter direct attach copper link intended for adjacent or same-rack connections only.

Will it work with non-Ubiquiti switches?
It is compatible with standard SFP28 ports, but buyers should confirm device support for third-party DACs in their specific hardware.