Which tool is used for securing and removing cards and motherboards?

The hex driver is the correct tool for securing and removing cards and motherboards in many electronic devices, including Macs. It is specifically designed to fit the hexagonal screws that are commonly used on motherboards and other internal components of computers. These screws provide a secure connection while allowing for more torque during installation or removal, which is essential for ensuring that components are properly fastened without risking damage.

In contrast, while a screwdriver may also be used for certain components, it typically corresponds to traditional Phillips or flathead screws, which may not be as prevalent in modern Apple designs. A slotted driver, which is a type of flathead screwdriver, is less versatile for this purpose due to the limitations of its design. A static bag, on the other hand, is used for protecting electronics from static electricity rather than for securing or removing components. Thus, the hex driver's unique design makes it the best choice for working with motherboards and cards.