Which of the following devices would typically use a SCSI adapter?

The correct answer is that a scanner would typically use a SCSI adapter. SCSI, which stands for Small Computer System Interface, is a standard used for connecting and transferring data between computers and peripheral devices. Scanners, particularly those that require high-speed data transfer and can handle large volumes of information, commonly utilize SCSI connections due to their ability to manage multiple devices on a single bus and support faster data rates compared to other interfaces like USB at the time of widespread SCSI usage.

In contrast, a mouse primarily requires simple input connections that do not necessitate the high data transfer capabilities of SCSI, making other connection types more suitable. A game controller usually connects through standard USB or other proprietary interfaces designed for gaming systems, thus not fitting the typical SCSI usage. Likewise, while some specialized or older printers might use SCSI, most modern printers use USB or network connections for ease of use and compatibility, making scanners the most appropriate choice for typical SCSI usage in current context.