QSFP stands for Quad Small Form-factor Pluggable, a compact, hot-pluggable transceiver used in high-speed data communication. It is designed to support multiple data rates, including 40 Gbps and 100 Gbps, making it ideal for data centers and networking applications. The QSFP module can transmit and receive data over fiber optic or copper cables, allowing for flexible connectivity options. Its small size and high performance make it a popular choice for network switches, routers, and servers, facilitating efficient data transfer in modern networking environments.