InfiniBand/fibre optic cable BlueOptics CBL-NTWK-0944-MS28C05M-BL 0.5 m SFP28 Male/Male

The BlueOptics CBL-NTWK-0944-MS28C05M-BL is a 0.5 m InfiniBand/fibre optic direct attach cable with SFP28 male connectors on both ends, designed for short-reach high-speed links in racks and adjacent rack connections. The cable supports 25G data rates and is suitable for electrical twinax direct attach use where SFP28 ports are present. Its compact half-metre length reduces excess cabling in dense rack environments while providing a direct low-latency connection between compatible network devices.

Advantages

This 0.5 m SFP28 male-to-male cable offers a low-latency, low-power connectivity option for short-distance interconnects, supporting Ethernet, Fibre Channel, FCoE and InfiniBand protocols up to 25 Gbit/s. The passive design simplifies deployment in hardware platforms that accept passive DAC twinax cables and reduces the number of active components in the link. The short length helps maintain signal integrity and minimizes cable management complexity in populated racks.

Suitable for

• Connecting SFP28 ports on switches, routers and storage systems within the same rack or adjacent racks
• High-speed server-to-switch links in data centers and network closets
• Short-reach InfiniBand or 25G Ethernet interconnects where passive twinax DACs are supported

Key specifications

• Connector type: SFP28 male to SFP28 male
• Length: 0.5 metres
• Supported data rate: up to 25 Gbit/s
• Cable type: passive direct attach (twinax/twinaxial copper for short-reach electrical signaling)
• Wire gauge reference: 30 AWG

How to use

Install the cable by inserting each SFP28 connector into the corresponding SFP28 port on the devices to be linked, ensuring the connectors latch securely. Use this cable only where the hardware vendor specifies support for passive DAC or 25GBase-CR connections. Confirm device firmware and port settings accept passive twinax Direct Attach Cables to ensure link negotiation at the required speed and protocol. No additional power or inline transceivers are required for passive operation.

Recommendations

Route the cable to avoid sharp bends and mechanical strain; maintain the minimum bend radius recommended for 30 AWG twinax cables. For reliable operation, use this cable for short-reach connections (within rack or adjacent racks) and verify compatibility with the switch, router or storage system before deployment.