The TRENDnet TU-S9 is a versatile USB to serial converter that bridges the gap between modern computers and legacy RS-232 serial devices. Here are the key features: 

1. Purpose: The TU-S9 allows you to connect an RS-232 serial device, such as a modem or printer, to a USB port on your desktop PC or laptop.
   
   
2. Easy Installation: With Universal Plug and Play (UPnP), setting up the TU-S9 is a breeze. Simply plug it in, and your computer will recognize it automatically.
   
   
3. Operating Systems Compatibility: 
   • Supports Windows® (including Windows 10, 8.1, 8, and 7).
     
   • Compatible with Mac OS® (versions 10.11 and later).
     
   
   
4. Data Rate: The TU-S9 supports data rates of up to 6 Mbps, ensuring efficient communication between your serial device and computer.
   
   
5. Compact Design: Its compact form factor makes it ideal for both desktop and laptop use.
   
   
6. USB Compatibility: The adapter supports USB 1.1 and is compatible with USB 2.0 and USB 3.0 ports.
   
   
7. Reliable Connectivity: Connect a wide range of devices, including modems, printers, and more, with confidence.