40 Gigabit direct attached copper cable (40 cm, QSFP+).

The QSFP-40G-C40CM is a high-performance 40G QSFP+ to QSFP+ Direct Attach Copper (DAC) Cable. It is designed for short-distance, high-speed connectivity in data centers and high-performance computing (HPC) networks. This 40cm cable offers a cost-effective solution for connecting QSFP+ ports on switches, routers, and network interface cards (NICs) within racks and across adjacent racks.