Based on this product's specifications, here are some alternatives and similar models
Internal Serial Adapter DeLOCK 89444
Summary description:
The DeLOCK 89444 is an internal serial adapter featuring a PCIe host interface and a SUN2212 chipset. It supports data transfer rates up to 0.0001152 Gbit/s and has a FIFO buffer of 128 B. Compatible with various Windows 10 versions, this expansion card is ideal for adding serial ports to your system.