Signal Converter EFB Elektronik EB853C Blue

The EFB Elektronik EB853C Blue is a USB A plug to DSub 9‑pole (DB9) plug signal converter with a 1.8 m cable length. It enables connection of serial devices to a USB port and draws power from the USB interface. The converter uses the FTDI-232RL chipset and is supplied with a driver CD. It is compatible with a wide range of operating systems, including Windows 98SE/ME/2000/XP/Vista/7/8/10, Linux and macOS.

Advantages

The converter provides a stable RS‑232 connection over USB while remaining compact and robust. Its FTDI chipset ensures broad driver support and reliable data transmission. Power is supplied directly from the USB port, removing the need for an external power source. The 1.8 m cable offers flexible placement of connected devices.

Suitable for

• Connecting legacy serial devices (RS‑232) to modern PCs or laptops via USB
• Industrial equipment control and monitoring that requires DB9 connectivity
• Serial consoles, POS systems, modems and measurement instruments

Key specifications

• Connector: USB A plug to DSub 9‑pin (DB9) plug
• Cable length: 1.8 metres
• Supported protocols: RS‑232 (DB9, DB25 compatible)
• Chipset: FTDI‑232RL
• Power: bus‑powered from USB interface
• Compatibility: Windows 98SE/ME/2000/XP/Vista/7/8/10, Linux, macOS
• Includes: driver CD
• Colour: Blue

How to use

Connect the DB9 plug to the serial device and insert the USB A plug into an available USB port on your computer. If required by the operating system, install the drivers from the supplied CD or download the latest FTDI drivers from the manufacturer. Once drivers are installed, the serial device will be accessible through a virtual COM port in your system settings or terminal software.

Recommendations

For stable communication, use the converter with original or updated FTDI drivers and check cable connections before operation. Avoid excessive bending of the cable and keep the converter away from strong electromagnetic sources to reduce interference. Verify COM port settings (baud rate, parity, stop bits) to match the connected device.