Specifications

Mac OS X versions (builds) for computers
Mac OS X: Starting up in Safe Mode
Mac OS X: What is Safe Boot, Safe Mode?
Monitor and display adapter table
OS X: About OS X Recovery
Recovering a lost firmware password
Safe Boot takes longer than normal startup
SERVICE: Latest Apple Service Toolkit download links and documentation
Thunderbolt ports and displays: Frequently asked questions (FAQ)
Using USB 3 devices on Mac computers FAQ