InfiniBand/fibre optic cable BlueOptics R9D20A-BL 3 m SFP+ Male/Male

The BlueOptics R9D20A-BL is a 3 m SFP+ Direct Attach Cable (DAC) designed for short-distance high-speed connections in racks and between adjacent racks. It is a passive 10GBase-CR twinax copper cable with SFP+ to SFP+ connectors and 30 AWG wiring, compatible with hardware that supports the original HPE Aruba R9D20A 10GBase-CR 3 m DAC. The cable supports Ethernet, FCoE, Fibre Channel and InfiniBand applications up to 10 Gbit/s over a 3 m span and is intended for use in switches, routers, storage systems and similar network devices.

Advantages

The BlueOptics R9D20A-BL provides MSA-compliant construction using components from established manufacturers to ensure reliable signal transmission and long service life. As a passive twinax DAC it consumes very little power (around 0.1 W), offers low latency and a low failure rate due to its simple design. It is tested for compatibility with the respective vendor platforms and offers an economical alternative to branded original cables while maintaining the same interface functionality.

Suitable for

• Short-distance 10G connections within racks and between adjacent racks
• Switch-to-switch, switch-to-server or switch-to-storage links
• Environments using Ethernet, FCoE, Fibre Channel or InfiniBand up to 10 Gbit/s

Key specifications

• Type: Passive 10GBase-CR twinax copper Direct Attach Cable (DAC)
• Length: 3 m
• Connectors: SFP+ (male to male)
• Wire gauge: 30 AWG
• Compliance: MSA-compliant
• Supported protocols: Ethernet, FCoE, Fibre Channel, InfiniBand (up to 10 Gbit/s)
• Brand/model compatibility: Compatible with HPE Aruba R9D20A wired ports

How to use

Insert each SFP+ connector into compatible SFP+ ports on the devices to be linked, ensuring the ports support passive 10GBase-CR DAC twinax copper cables. No external power is required for the cable itself. After insertion, verify link status in the connected devices and confirm the chosen transmission protocol is supported by both ends. For initial deployment, test connectivity and throughput to ensure expected performance.

Recommendations

Use the cable for short, fixed rack connections in data centers and avoid routing it near sources of strong electromagnetic interference. Confirm vendor compatibility for passive DACs in the device firmware and handle connectors carefully to prevent contamination; store unused connectors with protective caps.