Which of the following is not considered exclusively an output device?

A CD-RW drive is not considered exclusively an output device because it serves multiple functions. It can write data to, read data from, and also erase data on CDs. While it does have output capabilities—such as reading and playing music or data from a CD—it is primarily recognized as a storage device. In contrast, the other options—monitor, printer, and speaker—are strictly output devices, each exclusively designed to provide information to the user in various formats, such as visual, printed, or audio outputs. This distinction highlights that the CD-RW drive’s ability to also perform input actions (like writing data) sets it apart from purely output devices.