Based on this product's specifications, here are some alternatives and similar models
DeLOCK M.2 Card to 4 x Serial RS-232 DB9 PCIe 2.1
Summary description:
The DeLOCK M.2 Card provides 4 x Serial RS-232 DB9 ports via PCIe 2.1 interface. It supports Windows 10 and Server 2016/2019. Compact dimensions of 80x22x8 mm ensure easy installation.