Based on this product's specifications, here are some alternatives and similar models
Zero-Modem Connection Cable Digitus AK-610100-018-E
Summary description:
The Digitus Zero-Modem Connection Cable is 1.8 m long and features D-Sub 9-pin connectors on both ends. It is designed for reliable data transfer between devices that require a null modem connection. The cable is ideal for connecting computers, printers, and other serial devices, ensuring stable communication. Its compact packaging makes it easy to store and transport.