DSDTs ("Differentiated System Description Tables") are configuration files that tell Mac OS X how to use your Hackintosh's motherboard, without the need for extra kexts and drivers. For desktop computers, a DSDT will make it a lot easier to enable sleep mode on your Hackintosh; it may also fix bootup problems related to your CPU, and enable HDMI audio. For laptop computers, meanwhile, DSDTs are even more useful. A good DSDT will fix a huge number of laptop-related issues in Mac OS X, including problems regarding audio, battery, graphics, USB, WiFi, fan control, and more. In this guide, we'll show you how to edit your own DSDT, by applying patches with the DSDT editing tool MaciASL.