DAC Cable BlueOptics PAN-QSFPDD-DAC-1M-BL QSFP-DD InfiniBand 1m Black

The BlueOptics PAN-QSFPDD-DAC-1M-BL QSFP-DD InfiniBand 1m Black is a 1-meter direct attach copper (DAC) cable with QSFP-DD connectors at both ends. Designed for short-distance, high-bandwidth links in data centers and rack environments, this passive twinax cable supports InfiniBand and 400GBase-CR4 electrical signalling where compatible hardware accepts passive QSFP-DD DAC connections. The cable is supplied in black, weighs approximately 0.15 kg and is intended for rack-to-rack or intra-rack high-speed interconnects.

Advantages

The cable provides a low-latency, high-bandwidth electrical connection without the need for optical transceivers, reducing power consumption and simplifying installation. Its QSFP-DD to QSFP-DD form factor supports up to 400 Gbps class transmission when used with compatible ports and protocols. Passive construction and standardized MSA-compatible connectors contribute to predictable behaviour, low failure rates and straightforward replacement in standard networking hardware.

Suitable for

• Short-distance high-speed links between switches and routers in racks
• Server-to-switch or switch-to-switch connections within the same or adjacent racks
• Storage connectivity and high-throughput InfiniBand links
• Environments that require low latency and low power consumption interconnects

Key specifications

• Cable type: Direct Attach Copper (DAC), passive twinax
• Connector type: QSFP-DD to QSFP-DD
• Cable length: 1 m
• Maximum supported data class: up to 400 Gbps where supported by connected hardware and protocol
• Colour: Black
• Approximate weight: 0.15 kg

How to use

Install the cable by inserting each QSFP-DD connector into compatible QSFP-DD ports on your devices while the equipment is powered down or following your site's hot-plug procedures. Ensure both endpoints support passive DAC operation and the intended protocol (for example InfiniBand or 400GBase-CR4 electrical signalling). Verify link status and speed in device management interfaces after connection and, if necessary, consult the host device compatibility list or firmware settings to enable passive DAC support.

Recommendations

Use this 1 m passive QSFP-DD DAC for short-reach interconnects inside racks or between adjacent racks. Avoid installing the cable in runs longer than the intended short-range specification and route it to prevent sharp bends or mechanical strain on the connectors. Confirm compatibility with the switch, router or HBA vendor documentation before deployment.