Cabo de fibra ótica InfiniBand BlueOptics QSFP28-DAC-2M-MT-BL 2 m macho/macho

The BlueOptics QSFP28-DAC-2M-MT-BL InfiniBand Fibre Optic Cable 2m Male/Male is a 2‑meter direct attach solution with QSFP28 connectors designed for short‑reach 100G links. It implements a passive twinax copper connection compatible with QSFP28 ports and supports Ethernet, Fibre Channel, FCoE and InfiniBand protocols at up to 100 Gbit/s over a 2 m distance. The cable follows MSA guidelines and is intended for rack-to-rack or intra-rack connections in data centres, server rooms and networking closets.

Advantages

This QSFP28 direct attach cable provides a low-latency, low-power interconnect for high-density environments. Its passive twinax design eliminates the need for power-consuming active components while offering predictable signal integrity for short runs. Built with industry-standard components and MSA-compliant connectors, the cable is suitable for mixed-vendor infrastructures and is engineered for long service life and consistent performance.

Suitable for

• High-density switch-to-switch or switch-to-server links within racks
• Top-of-rack and adjacent-rack 100G connections in data centres
• Storage system interconnects requiring 100G bandwidth
• InfiniBand clusters and high-performance computing cabling

Key specifications

• Connector type: QSFP28 to QSFP28, male/male
• Length: 2 meters
• Transmission: passive twinax copper (DAC)
• Supported protocols: Ethernet, FCoE, Fibre Channel, InfiniBand
• Data rate: up to 100 Gbit/s over 2 m
• Wire gauge: 30 AWG
• MSA-compliant mechanical and electrical characteristics

How to use

Verify that both endpoints support passive QSFP28 DAC cables and the intended 100G protocol. Ensure devices are powered down or ports are in a safe insertion state as recommended by the equipment manufacturer, then insert each QSFP28 connector firmly into the corresponding port until the latch engages. After connection, enable or configure the 100G interface in the switch, router or host firmware/OS according to vendor instructions. For removal, disengage the latch and pull the connector straight out to avoid side loading the port.

Recommendations

Use this cable for short-reach, high-throughput links inside racks or between adjacent racks. Avoid tight bends and excessive mechanical stress, maintain bend radius recommended by the manufacturer, and keep the cable away from sources of electromagnetic interference. Confirm compatibility with your hardware vendor’s list of supported passive QSFP28 DACs if vendor-restricted modules are enforced.