Based on this product's specifications, here are some alternatives and similar models
Serial adapter cable Renkforce RF-4543257 — 1× SUB-D 9-pin (male) to 1× SUB-D 25-pin (female)
Summary description:
Renkforce RF-4543257 is a serial adapter cable converting a 9-pin SUB-D connector to a 25-pin SUB-D connector. It allows connection between devices with DE-9 and DB-25 serial ports for data transfer, configuration, or legacy equipment interfacing. Suitable for industrial, diagnostic, and communication applications where direct cable adaptation between RS-232 devices is required.