InLine USB to RS232 Adapter USB A to 9 Pin Sub-D USB extension 0.8m

The InLine USB to RS232 Adapter (33304A) converts a USB port into an RS-232 serial interface, enabling connection of RS-232 devices to a computer via USB. The adapter has a 9-pin Sub-D male (DB9) connector and a 0.8 m cable, and is supplied with a driver and manual. It is compatible with common operating systems and is suitable for connecting devices such as modems, printers, PDAs and industrial equipment without occupying a computer's built-in serial port.

Advantages

This USB to RS232 adapter provides a compact and portable solution for adding a serial port via USB. The 9-pin Sub-D male (DB9) connector ensures compatibility with standard RS-232 peripherals. The 0.8 m cable length balances reach and desk neatness. The product includes drivers and a manual for easy installation and comes in a blue housing for easy identification.

Suitable for

• Connecting modems to a computer via USB
• Connecting printers and POS devices that use RS-232
• Linking industrial equipment and control systems with RS-232 interface
• Connecting legacy PDAs and serial peripherals

Key specifications

• Manufacturer: InLine
• Model / MPN: 33304A
• EAN: 4043718053391
• Connector 1: 9-pin Sub-D male (DB9)
• Cable length: 0.8 m
• Colour: Blue
• Includes: driver and manual

How to use

Install the supplied driver on the computer following the manual. Connect the USB end of the adapter to an available USB port and attach the RS-232 device to the DB9 connector. After driver installation the adapter will create a virtual COM port in the operating system; configure your application or device to use that COM port and the required serial parameters (baud rate, parity, data bits, stop bits).

Recommendations

For stable communication, use the shortest practical cable routing and verify serial settings match the connected device. If connection problems occur, confirm correct driver installation and try a different USB port or restart the computer.