TRENDnet TU-S9 USB 1.1 to RS-232 Serial Converter
Overview
The TRENDnet TU-S9 is a specialized data transfer cable designed to bridge the gap between modern computers and legacy serial devices. It provides a straightforward solution for connecting peripherals that use an RS-232 serial interface, such as modems, industrial sensors, or network hardware, to a standard USB Type-A port. This converter is an essential tool for technicians, network engineers, and IT professionals who need to maintain or configure equipment that lacks modern connectivity options. Its simple, driver-supported installation process allows it to appear as a standard COM port within the operating system. This adapter is engineered for reliability and broad compatibility. It supports the USB 1.1 standard and is forward-compatible with USB 2.0 and 3.0 ports, ensuring functionality across a wide range of host desktops and laptops. By handling the electronic signal conversion externally, the TU-S9 eliminates the need for internal expansion cards, offering a portable and non-invasive way to add serial connectivity. The device is bus-powered, drawing all necessary energy directly from the USB port, which removes the complexity of an external power adapter. Physically, the converter is built for practical field use. The unit features a durable, compact RS-232 connector housing and an integrated, flexible cable that provides sufficient length for most connection scenarios without creating excess clutter. The plug-and-play design streamlines setup, making it an efficient tool for on-the-go diagnostics, device configuration, or permanent installations where a reliable serial connection is required for data communication.
Key Features
- Connects RS-232 serial devices to a standard USB port.
- Supports USB 1.1, with compatibility for USB 2.0/3.0.
- Offers broad compatibility with Windows and Mac systems.
- Draws power directly from the USB bus; no adapter needed.
- Provides data transfer rates of up to 500kbps.


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