ETU-LINK 40G QSFP+ DAC is a high-speed data communication copper cable used to connect data centers, computer networks, and communication devices. It utilizes the QSFP+ (Quad Small Form-factor Pluggable Plus) interface and supports a transmission rate of 40Gbps. This copper cable provides high-speed and stable data transmission, making it suitable for applications with high bandwidth and low latency requirements. It offers high-speed data transmission capabilities over short distances, while also being cost-effective and easy to install.