SFP+ Direct Attach Cable BlueOptics A3RG-BL 10GBASE-CR 0.5 m

The SFP+ Direct Attach Cable BlueOptics A3RG-BL 10GBASE-CR 0.5 m is a 0.5 metre passive copper twinax assembly that provides a fixed SFP+ form-factor connection for short-range 10 Gigabit Ethernet links. Designed for environments that require cost-effective, low-latency connections, this 10GBASE-CR compliant cable connects SFP+ ports on servers, switches and network appliances without the need for optical transceivers. Its compact length and passive design make it suitable for rack-to-rack links and top-of-rack deployment where predictable performance and simple installation are priorities.

Advantages

The cable delivers the bandwidth and signaling required for 10 Gigabit Ethernet while keeping power consumption and heat generation low compared with active optical solutions. With a fixed SFP+ interface at both ends, it eliminates the need for separate transceivers and simplifies inventory. The short 0.5 m length reduces cable clutter in dense rack environments and supports low-latency, high-throughput connections for server-to-switch and switch-to-switch links within the same rack or adjacent racks.

Suitable for

• Top-of-rack switching and short rack-to-rack interconnects
• Direct server-to-switch connections in data centres and server rooms
• High-density networking where low latency and minimal cabling are required
• Environments preferring passive twinax copper solutions over optical links for short distances

Key specifications

• Form factor: SFP+ fixed twinax copper assembly
• Data rate: 10 Gigabit Ethernet (10GBASE-CR)
• Length: 0.5 m
• Cable type: Passive twinax copper
• Compatibility: Devices with SFP+ ports supporting 10GBASE-CR

How to use

Plug each SFP+ connector into the SFP+ port of the devices to be connected, ensuring proper seating and latch engagement. No additional configuration is required at the physical layer beyond standard port enablement on connected devices. Verify link status and speed through the switch or server management interface. For best results, use on devices that explicitly support passive SFP+ direct attach cables and ensure firmware or driver compatibility where applicable.

Usage recommendations

Install and route the cable within the rack to avoid sharp bends and mechanical strain; maintain the minimum bend radius specified by the device or cable manufacturer. Use the 0.5 m length for short-reach links inside the same rack or adjacent racks and prefer copper twinax for cost- and power-sensitive deployments where optical transceivers are not required.