25G SFP28 (25 Gigabit Ethernet) SFP28 is designed for modern high-density data center architectures. It delivers 25Gbps per lane and is often used in leaf-spine networks, cloud infrastructure, and high-performance computing environments. The 25G Modules are based on SFP28 form factor. 25G Direct. At a high level, SFP-based modules are grouped into three major speed families: 1G SFP, 10G SFP+, and 25G SFP28. While they often share the same physical form factor, their internal signaling rates, encoding methods, and hardware requirements are fundamentally different. But what is SFP28 exactly, and why has it become a cornerstone of modern network upgrades? This guide dives deep into SFP28 technology, its various types. 25G DACs provide the lowest cost fixed length 1 to 5 meter interconnect in data center “Top of Rack” consolidation applications where high performance servers are increasing application density on virtualized servers using 25G Sever Adapters driving network capacity demands to levels previously. SFP transceivers are compact, hot-pluggable modules used for data transmission over fiber optic or copper cables. They are designed to support different network speeds, ranging from 1 Gbps to 100 Gbps, depending on the specific type of transceiver.