Overview The Black Box QSFP-H40G-CU3M-BB is a 9.8-foot direct attach copper cable designed to deliver data transfer speeds up to 40 Gbps. It serves as a cost-effective and energy-efficient solution for connecting switches, servers, or routers within the same rack, eliminating the need for optical transceivers. This cable is ideal for environments where low latency and power savings are essential, such as data centers, university labs, and test setups. Key features QSFP+ connectors compliant with MSA and SFF-8436 standards ensure broad compatibility and reliable performance. Hot-swappable design allows network teams to add or replace connections during maintenance without disrupting operations. CL2 rated PVC jacket meets building safety codes, making it suitable for indoor installations in network closets and server rooms. Low power consumption of approximately 0.003 W helps reduce overall energy costs in high-density configurations. Wide operational temperature range from -4 to 158 °F (-20 to 70 °C) supports stable performance in typical indoor environments. Plug-and-play functionality simplifies setup and management, especially in racks with multiple high-speed connections. Key specs Data transfer speed: up to 40 Gbps Cable length: 9.8 feet (3 meters) Connector type: QSFP+ (Quad Small Form-factor Pluggable Plus) Standards compliance: MSA and SFF-8436 Power consumption: approximately 0.003 W Jacket rating: CL2 PVC for in-building safety Operating temperature range: -4 to 158 °F (-20 to 70 °C) Connectivity and compatibility This cable is designed to work seamlessly with Cisco equipment that supports the QSFP-H40G-CUxM series. It also maintains compatibility with devices from Ubiquiti, Mikrotik, and other vendors that adhere to the same QSFP+ standards. This broad compatibility makes it a flexible choice for mixed-vendor network environments. Ideal uses and environments The QSFP-H40G-CU3M-BB fits well in data centers and server rooms where short-reach, high-speed connections are needed within racks. Its low latency and power efficiency make it suitable for setups that prioritize performance and energy savings. It is also a strong option for university labs and test environments where quick, reliable data links are essential.
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