25G SFP28 AOC stands for 25 Gigabit Small Form-Factor Pluggable 28 Active Optical Cable. It is an integrated cable solution with fixed SFP28 connectors on both ends, combining embedded optical transceivers and multimode fiber in a single assembly. Designed for short-reach 25G Ethernet connections, it provides high-bandwidth, low-latency transmission for top-of-rack switching, server-to-leaf connectivity, and storage area networks.