If your Mac freezes or crashes and you can’t access any menus, the power
button on the CPU can be used to turn off the machine. Press the button and
hold it down and, after around 5-10 seconds, the Mac will turn off. This should
only be done when the Apple menu can’t be opened!
Loading/Ejecting CDs
Many Macs don’t have an eject button on the CD drive. Instead, the drive can be
opened by a key on the keyboard and, sometimes, by a button within a software
program.
Take a look at the number pad on the right side of the keyboard. Above the
usual number pad keys are four buttons. The first three control the
system volume. The key farthest to the right is the “eject” key. Push it
to open and close the CD drive.
This symbol will sometimes be seen within various applications. For example,
iTunes has an “eject” button in its interface that can be used to open and close
the CD drive.
USB Ports
A variety of different devices, from a mouse to a digital camera, can be plugged
into a Mac. Most of these connect to the computer via a USB port. USB stands
for Universal Serial Bus, and it is truly becoming “universal” as more and more
devices use this type of connector.
USB cables and ports generally have the USB symbol on them:
Take a look at the connecting end of a USB cable. This is the end that will plug
into the computer:
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