SFP28 is a type of small form-factor pluggable transceiver used in high-speed data communication. It supports data rates of up to 25 Gbps, making it suitable for applications like data centers and high-performance computing. SFP28 is designed to be backward compatible with SFP+ and SFP modules, allowing for flexible network configurations. This transceiver typically connects to fiber optic or copper cables, enabling efficient data transmission over short to medium distances. SFP28 modules are commonly used in Ethernet and InfiniBand networks, providing a compact and reliable solution for modern networking needs.