The FCL Serial Pen Tablet is a type of graphics tablet, often used in applications like digital drawing, handwriting recognition, or signature capture, that connects to your computer via a serial (RS-232) port. These tablets typically come with a stylus (pen) that allows you to interact with the computer's screen or software in a way similar to using a mouse, but with much greater precision for tasks like drawing or writing.

To use the FCL Serial Pen Tablet with a Windows computer, you need to install the appropriate Windows driver so that the tablet can communicate with the operating system and the software you intend to use.