What is QSFP?

QSFP (Quad Small Form-factor Pluggable) is a compact, hot-pluggable transceiver used for data communications applications. It supports data rates from 40 Gbps to 400 Gbps and beyond, by aggregating multiple high-speed channels. QSFP transceivers are commonly used in switches, routers, and network interface cards (NICs) to connect high-bandwidth devices in data centers and telecommunications networks.