Direct Attach Cable SFP28 to SFP28 BlueOptics 25GBASE-CR passive, 2 m, AWG30

BlueOptics Direct Attach Cable SFP28 to SFP28 is a passive twinax copper cable designed for 25GBASE-CR single‑lane Ethernet links. With a 2 meter length and AWG30 conductor, the cable provides a direct electrical connection between SFP28 ports in switches, servers and network appliances. The passive design requires no external power or transceiver electronics, offering a low‑latency, power‑efficient option for short‑reach interconnects where reliable 25 Gbit/s performance is needed.

Advantages

The cable delivers native 25 Gbit/s throughput over a short copper twinax link, minimizing latency and power consumption compared with active optics or separate transceiver modules. Its SFP28-to-SFP28 form factor ensures plug-and-play compatibility with SFP28 ports, simplifying installation and reducing component count in rack environments. The AWG30 construction balances flexibility and signal integrity for stable connections at the specified 2 m reach.

Suitable for

• Interconnecting SFP28 ports on switches and top-of-rack devices
• Direct server-to-switch connections in data center racks
• High-performance network appliances requiring single‑lane 25G links
• Low-latency short-reach links in hyperconverged and virtualization environments

Key specifications

• Interface: SFP28 to SFP28
• Standard: 25GBASE-CR (single‑lane 25 Gbit/s)
• Length: 2 m
• Cable type: Passive twinax copper (direct attach cable)
• Conductor gauge: AWG30
• Form factor: Fixed direct-attach with integrated SFP28 connectors

How to use

Insert each SFP28 connector into the corresponding SFP28 port until it clicks into place, ensuring the port latch is engaged. Use the cable for short-reach connections up to 2 m between compatible SFP28 ports on switches, servers or network appliances. No external power or configuration is required for the passive cable itself; configure link speed and network settings on connected devices according to your network design. For removal, depress the connector latch and pull the cable straight out to avoid straining the port.

Usage recommendations

Verify device compatibility with passive SFP28 DACs before deployment and ensure port settings are configured for 25G operation. Route the cable to avoid sharp bends and mechanical strain; maintain bend radius recommended by the equipment manufacturer. For reliable performance in rack installations, label both ends and keep cable length within the specified 2 m range.