Based on this product's specifications, here are some alternatives and similar models
Synology E10G18-T1 Single Port 10Gb RJ45 PCIe 3.0 x4 Network Interface Card
Summary description:
The Synology E10G18-T1 is a high-performance single-port 10GbE network interface card featuring an RJ45 connector and a PCIe 3.0 x4 host interface. Designed for seamless integration with compatible Synology NAS systems, this card provides reliable high-speed network connectivity for demanding data environments. It is an ideal solution for upgrading server bandwidth and improving overall network throughput in professional storage setups.