HPE 25Gb SFP28 to SFP28 3m Direct Attach Copper Cable

The HPE 844477-B21 is a three meter SFP28 to SFP28 direct attach copper cable that gives you a fast and straightforward way to run 25 Gigabit links inside a rack or between two neighboring racks. It comes ready to plug into any HPE device that has SFP28 cages, including SN2410 top of rack switches, Primera storage arrays, and StoreOnce backup systems, so you can move data quickly without investing in transceivers or fiber.

This cable supports the full 25 GBase specification with an impedance of 110 ohm, which keeps signal integrity stable even in busy data center environments. Signal delay stays low at roughly 4.5 nanoseconds per meter, helping latency-sensitive applications such as virtualization clusters, high-performance computing workloads, and real-time analytics.

Installation is uncomplicated. The assembly has a diameter of 4.5 mm and a bend radius of 23 mm for single bends, so it routes cleanly through cable managers and tight corners. At 10 feet long, it is ideal for connecting a server in the same rack to a switch above it or for linking two storage shelves that sit side by side. The operating temperature range of 32 °F to 158 °F matches typical data center conditions, which means you can deploy it with confidence in hot and cold aisles alike.

Whether you are building a new 25 Gigabit fabric, expanding an existing HPE deployment, or replacing aging 10 Gigabit links, this cable offers a low-cost, low-power, and low-latency path to higher bandwidth. Just plug in both ends, secure the latches, and your devices are ready to communicate at full speed.

Highlights:

• SFP28 to SFP28 copper cable that operates at 25 Gbps
• Three meter length for short reach links inside or between racks
• Compatible with HPE SN2410 switches, Primera storage, StoreOnce systems, and other HPE devices that accept SFP28
• Low signal delay of approximately 4.5 ns per meter keeps latency minimal
• 110 ohm impedance maintains consistent performance across the link
• 4.5 mm diameter and 23 mm single bend radius simplify cable routing
• No transceivers required, which lowers cost and power draw
• Functions in temperatures from 32 °F to 158 °F to align with common data center standards