DeLOCK 90781 Serial Converter Repeater Isolator USB 2.0 RS-232 Black Green

The DeLOCK 90781 is a compact USB 2.0 to RS-232 converter that expands a computer’s internal USB port with a serial RS-232 interface. Designed as a small adapter board, it is suitable for installation inside housings or on slot brackets and supports reliable serial data transmission for connected devices and PC applications.

Advantages

The converter combines USB 2.0 connectivity with RS-232 signalling, offering a space-saving board layout with dimensions of 31 mm × 35 mm × 15 mm. It supports remote wake-up and power management features and provides broad compatibility with serial devices. The unit’s compact design makes it convenient for mounting in enclosures or on brackets while maintaining stable data transfer.

Suitable for

Key specifications

How to use

Install the converter board into the desired housing or secure it on a slot bracket, then connect the USB 2.0 host cable to the computer’s internal USB port and the RS-232 connector to the serial device. Install any necessary drivers or system updates on Windows 10 or 11 if required. Configure serial port settings (baud rate, parity, data bits, stop bits) in the host application to match the connected device.

Recommendations

For reliable operation, mount the adapter in a stable, well-ventilated location inside the enclosure and ensure proper grounding of the RS-232 equipment. Verify driver compatibility with your operating system and confirm serial settings with the peripheral device before operation.