Based on this product's specifications, here are some alternatives and similar models
Network Interface Module Cisco C-NIM-4X= — 4x SFP/SFP+ ports, 10 Gigabit & Gigabit Ethernet, for Catalyst 8300
Summary description:
Cisco C-NIM-4X= is a network interface module providing four SFP/SFP+ ports supporting 10 Gigabit Ethernet and Gigabit Ethernet. Designed for Cisco Catalyst 8300 Series, it enables fiber or copper transceivers (via SFP/SFP+) for uplinks and aggregation. Compact hardware (89×184×32 mm) suits branch routers and edge deployments requiring high-speed connectivity and flexible port types.