BlueLAN Compatible Arista CAB-Q-S-2M 40G QSFP to 4x10G SFP+ Passive Direct Attach Breakout Cable, 2m, AWG30 CAB-Q-S-2M-BL

High-density 40G Ethernet links often require breaking out into four 10G connections, but finding a reliable, cost-effective cable that matches Arista equipment can be a challenge. The BlueLAN CAB-Q-S-2M-BL is a passive direct attach breakout cable that connects a QSFP port to four SFP+ ports, providing a simple, plug-and-play solution for data center interconnects.

Who is it for

This cable is intended for network engineers and data center operators who need to connect a 40GBASE-CR4 QSFP port to four 10GBASE-CR SFP+ ports on Arista switches, routers, or network interface cards. It is ideal for short-reach, high-density applications such as top-of-rack to server connections, storage networking, and high-performance computing clusters.

Main features

• Passive direct attach breakout cable: QSFP (SFF-8436) to 4x SFP+ (SFF-8431)
• Aggregate data rate: 40 Gbps (4x 10 Gbps per lane)
• Length: 2 meters, wire gauge AWG30 for flexibility and easy routing
• Compatible with Arista CAB-Q-S-2M, supports Ethernet standards IEEE 802.3ba (40GBASE-CR4) and IEEE 802.3ae (10GBASE-CR)
• Hot-pluggable for quick installation and maintenance

Specifications

• Cable type: Direct Attach Cable (DAC), breakout
• Connector A: QSFP (Quad Small Form-factor Pluggable)
• Connector B: 4x SFP+ (Small Form-factor Pluggable Plus)
• Cable construction: Passive
• Wire gauge: AWG30
• Data rate: 40 Gbps aggregate (4x 10 Gbps)
• Compatibility: Arista CAB-Q-S-2M
• Protocol support: Ethernet
• QSFP standard: SFF-8436
• SFP+ standard: SFF-8431
• Ethernet standards: IEEE 802.3ba (40GBASE-CR4), IEEE 802.3ae (10GBASE-CR)
• Hot-pluggable: Yes
• Application: Data center, network interconnect, high-performance computing (HPC)

Tips

For optimal performance, ensure both ends are firmly seated and the bend radius is not exceeded. This passive cable is best suited for short distances; for longer runs, consider an active optical cable.