Mac 
LED Cinema Display (24-inch, Late 2008): Intermittent flicker while connected to a Thunderbolt port
In certain cases you may notice an intermittent flicker on an Apple LED Cinema Display (24-inch, Late 2008) while it is connected to a Thunderbolt-enabled Mac.
Boot Camp: iMac displays a black screen during installation of Windows 7
When installing Microsoft Windows 7 on an iMac (27-inch, Late 2009) and iMac (21.5-inch, Mid 2010) using Boot Camp, a black screen may appear. This can happen because the Windows 7 installer does not include the necessary graphics or Bluetooth drivers … Continue reading
iMac (Mid 2010): Using the correct Mac OS X system software
Learn what to do if your iMac (21.5-inch, Mid 2010) or iMac (27-inch, Mid 2010) exhibits symptoms that indicate the wrong Mac OS X system software is installed.
OS X Mountain Lion: Some firmware updates do not appear in the Mac App Store
Some firmware updates for your Mac may not automatically appear in the Mac App Store, but you can easily download and install them.
Computers that can be upgraded to use OS X Internet Recovery
Some computers that did not come with OS X Lion or later installed can use the OS X Internet Recovery feature after applying a firmware update.
FaceTime for Mac: About HD video calling
FaceTime for Mac supports video calling in high definition (HD) with Macs that include a built-in FaceTime HD camera. In addition, many existing Macs can receive an HD video call while sending standard definition video.
Mac OS X versions (builds) for computers
Learn which Mac OS X versions (builds) originally shipped with or are available for your computer via retail discs, downloads, or Software Update.
Intel-Based Apple notebooks: Identifying the right power adapter and power cord
Learn which power adapter, power cord, and plug are appropriate for each Intel-based Apple notebook. Remember that size, shape, and color of replacement adapters and cords may vary.
Using USB 3 devices on Mac computers FAQ
Learn more about using USB 3 ports and devices on Mac computers.
Final Cut Pro X 10.1: Scroll bars intermittently disappear
The horizontal and vertical scroll bars might intermittently disappear in the Event Browser and Timeline in Final Cut Pro X 10.1.x. This can occur after you pair a mouse or trackpad with your MacBook Pro (Retina, Late 2013) or Mac Pro (Late … Continue reading
