Quiz Preview: Port Authority -- Over the years, the Macintosh has sported a wide variety of ports for connecting peripherals and extending the computer's capabilities. But just because a port is present doesn't mean you can plug or unplug a device from it without taking certain precautions. For this week's quiz then, see if you can pick the correct answer to the question: "Into which of the following ports should never plug a device while the Macintosh is turned on?" Test your Macintosh knowledge on our home page today, and perhaps our explanation of the answers will save you a costly repair tomorrow! [ACE]
Thoughtful, detailed coverage of the Mac, iPhone, and iPad, plus the best-selling Take Control ebooks.
Verify Turned-Off Apple Wireless Keyboard
Can't tell if you've turned off your Apple Wireless Keyboard to prevent it from waking up an iOS device or running down its batteries? Tap the Caps Lock key, and if it illuminates, the keyboard is on; otherwise not.