Serial Cable Trendnet TU-S9 Blue USB Type-A DB-9

The Trendnet TU-S9 Serial Cable is a USB-to-serial adapter with a blue USB Type-A connector on one end and a DB-9 (RS-232) connector on the other. It enables connection of RS-232 serial devices such as modems, industrial controllers, or legacy peripherals to a computer USB port, providing compatibility between older hardware and modern desktops or laptops.

Advantages

The TU-S9 offers plug-and-play connectivity for many operating systems and a compact, durable cable design that reduces signal loss and wear. Its standard USB Type-A to DB-9 configuration simplifies wiring to legacy serial equipment without requiring internal card installation.

Suitable for

• Connecting modems and serial printers to a USB port
• Linking industrial controllers, PLCs, and diagnostic equipment
• Accessing console ports on network devices and legacy hardware

Key specifications

• Model: TRENDnet TU-S9
• Connectors: USB Type-A (male) to DB-9 RS-232 (female)
• Brand: TRENDnet
• MPN: TU-S9
• EAN: 0710931303209
• Category: Serial & Parallel cables

How to use

Plug the USB Type-A connector into an available USB port on your computer and attach the DB-9 connector to the serial device. If required by your operating system, install the appropriate driver provided by TRENDnet or included with the device. After installation, configure the serial port settings (baud rate, parity, data bits, stop bits, and flow control) in your application or terminal program to match the serial device.

Recommendations

For reliable communication, use short cable runs when possible and verify matching serial settings between the computer and the RS-232 device. If you experience connection issues, check for the latest driver from TRENDnet and confirm that the USB port supplies sufficient power.