The 1.25G SFP modules are compatible with various networking equipment, including switches, routers, and media converters that have SFP slots. They typically support Gigabit Ethernet connections, enabling communication over multimode or single-mode fiber cables. Additionally, they can work with both 1.25GBASE-SX and 1.25GBASE-LX standards, making them versatile for different network setups in data centers and enterprise environments.