Alcatel-Lucent 40 Gigabit Direct Attach Copper Cable QSFP+ to QSFP+ 7m (QSFP-40G-C7M)

Data centers and high-performance computing environments demand low-latency, high-bandwidth interconnects that won't break the budget. The Alcatel-Lucent QSFP-40G-C7M is a 7-meter passive Direct Attach Copper (DAC) cable that delivers 40 Gigabit Ethernet connectivity between QSFP+ ports on switches, routers, and servers, eliminating the need for separate optical transceivers and fiber cabling.

Who is it for

Network architects and data center operators seeking a cost-effective, reliable solution for short-reach 40GbE links within racks or across adjacent racks. Ideal for high-density top-of-rack (ToR) to server connections, storage area networks, and high-performance computing clusters.

Main features

• 40 Gbps data transfer rate compliant with IEEE 802.3ba 40GBASE-CR4 standard
• QSFP+ (SFF-8436) male connectors on both ends, MSA compliant for broad interoperability
• Passive twinax copper construction – zero power consumption and no cooling requirements
• 7-meter length (23 feet) for flexible rack-to-rack or intra-rack cabling
• Hot-swappable design for easy installation and maintenance without downtime
• Durable, low-latency copper medium with minimal signal degradation over short distances

Specifications

• Cable Type: Direct Attach Copper (DAC) passive twinax
• Data Rate: 40 Gbps (40 Gigabit Ethernet)
• Connector A: QSFP+ male
• Connector B: QSFP+ male
• Length: 7 meters (23 feet)
• Technology: Passive, no power consumption (0W)
• Compliance: MSA, IEEE 802.3ba, RoHS
• Application: Data center, HPC, enterprise networking

Tips

For optimal performance, ensure both connected devices support 40GbE QSFP+ ports and that the cable bend radius is not exceeded during installation. This passive DAC is best suited for distances up to 7 meters; for longer runs, consider active optical cables or fiber transceivers.