3.5-inch Drive Bay
There are two types of 3.5-inch drive bays:
internal and external. Internal 3.5-inch drive bays hold drives, like hard drives,
that do not need to be touched from outside of the computer. External 3.5-inch
drive bays hold drives, like floppy drives, that need their disks to be manually
inserted from outside of the computer. The picture above shows a Zip drive on
the left and a floppy drive on the right. Below is a picture of a hard drive.