QSFP+ stands for Quad Small Form-factor Pluggable Plus, a compact, hot-pluggable transceiver used in high-speed data communication. It supports data rates of up to 40 Gbps and is commonly used in data centers and networking equipment for connecting switches, routers, and servers. The QSFP+ module can transmit data over multiple channels, typically four channels of 10 Gbps each. This design allows for efficient use of space and power, making it ideal for applications requiring high bandwidth, such as Ethernet and InfiniBand networks.