SFP28 DAC-kabel BlueOptics SFP28-DAC-1M-SO-BL 1m SFP28 bus

The BlueOptics SFP28-DAC-1M-SO-BL is a 1 meter direct attach copper (DAC) cable with SFP28 connectors on both ends, engineered for high-speed 25GbE links in data centre environments. Its compact, short-reach design provides a fixed, low-latency connection between network switches, routers and servers where cost-effective, high-bandwidth cabling is required. The cable's physical design and SFP28 form-factor ensure plug-and-play compatibility with SFP28 ports that accept DAC modules.

Advantages

This SFP28 DAC cable delivers consistent performance for short-distance 25 Gigabit Ethernet connections while maintaining low power consumption compared to active optical alternatives. Its one-meter length reduces cable clutter and signal degradation over short links, and the SFP28 connectors provide a standardized, hot-pluggable interface. The cable's black outer jacket and compact profile make it suitable for dense rack installations.

Suitable for

• Connecting switches to switches within the same rack or adjacent racks
• Linking servers to top-of-rack or spine switches for low-latency traffic
• Short-reach uplinks in data centres and telecom wiring closets

Key specifications

• Connector type: SFP28 on both ends
• Maximum data rate: 25 Gbps per link
• Cable length: 1.0 m
• Cable type: Direct Attach Copper (passive DAC)
• Colour: Black outer jacket
• Weight: approximately 0.08 kg

How to use

Insert each SFP28 connector into the corresponding SFP28 port on your networking devices until the latch engages. Ensure both devices support passive DAC modules and the same link speed (25GbE) before powering up the link. After insertion, verify link status through the device management interface and check for stable link negotiation and correct speed/duplex settings. For removal, release the connector latch and pull the module straight out to avoid damaging the port.

Recommendations

Use this 1 m SFP28 DAC cable for short, high-bandwidth links inside racks or between adjacent racks. Avoid routing the cable near sharp edges or heat sources, and do not bend the cable sharply at the connector ends. Confirm compatibility with your switch or server vendor since some devices require explicit support for third-party DACs.