Based on this product's specifications, here are some alternatives and similar models
Network Switch Module ALLNET ALL4750
Summary description:
The ALLNET ALL4750 network switch module features LC connectors and supports single-mode fiber with 1000BASE-LX and 1000BASE-SX technologies. Compatible with ALLNET, Cisco, and D-Link devices, it ensures reliable and high-speed data transmission. Ideal for expanding network capabilities and enhancing connectivity in various environments.