DB9 to DB25 serial port adapter. This adapter allows you to bridge devices that use different physical connectors for the same RS-232 serial communication standard.
Key Information
Function: It changes a DB9 male connector to a DB25 female connector, or vice versa depending on the specific pinout.
Purpose: These adapters were widely used to connect various computer peripherals, such as modems, printers, networking equipment, and industrial machinery, to computers with different port configurations.
Connectivity: Both DB9 and DB25 connectors are types of D-subminiature (D-sub) connectors that primarily utilize the RS-232 serial
communication protocol. The DB25 was the original standard but was later replaced by the smaller DB9 for most applications because many of the 25 pins were rarely needed.