Cisco QDD-400-CU2.5M

The Cisco QDD-400-CU2.5M is a high-speed direct-attach copper cable designed for use in data center environments. It is part of Cisco's portfolio of networking solutions and is used to connect switches, servers, and storage devices within a data center. The "QDD" in the product name stands for "Quad Small Form-factor Pluggable (QSFP) Direct Attach Copper," indicating that it uses QSFP technology for high-speed data transmission. The "400" refers to its compatibility with 400 Gigabit Ethernet (GbE) networks, which provide extremely fast data transfer rates. The "CU2.5M" indicates that the cable has a length of 2.5 meters and is made of copper, which is a common material used for transmitting data over short distances.