The port status is busy if TeleFinder or another program has already opened it.
Scroll bar
Use the arrows to scroll the list a little at a time. Click in the gray bar to scroll a windowful at a time. Drag the white box to scroll to a different part of the list.
Click here to open and use the selected port.
Click here to close this window without changing serial ports.
TeleFinder displays Communications Toolbox icon when the communications toolbox is installed.