Based on this product's specifications, here are some alternatives and similar models
Fiber optic transceiver module Cisco GLC-SX-MMD 1000 Mbit/s SFP 850 nm
Summary description:
The Cisco GLC-SX-MMD is a fiber optic SFP transceiver module designed for high-speed data transfer at 1000 Mbit/s. Operating at a wavelength of 850 nm, it provides reliable connectivity for short-range applications. This module is compatible with various Cisco devices, ensuring seamless integration into existing networks. Its compact design and ease of installation make it an ideal choice for enhancing network performance.