Kernel EXTensions - KEXTs, Everything most people could possibly want to know

First of all, thanks realityiswhere,

Source from : http://www.projectosx.com/forum/index.php?showtopic=102

WORK IN PROGRESS

Important or frequently used kexts will be highlighted in Red. Problematic kexts (known to cause problems, not necessarily kexts to be removed) will be marked in Orange. Anything marked with Obsolete has nothing to do with Intel Macs or OSx86. Pseudo-Extensions only have an Info.plist and a version.plist, not a binary (binaries can be very, very loosely called “programs”).

If you see another table on the right of a kext, that means these kexts are located *INSIDE* of the kext on the left. Access them by right clicking the kext in question, click “show package contents”, under the Contents/PlugIns/ directory.

If anyone edits this and messes it up, I will be very sad

Apple KEXTs

Kext Name	Definition
ACard6280ATA.kext	Obsolete SCSI/ATA drivers for Acard
ACard62xxM.kext	Obsolete SCSI/ATA drivers for Acard
ACard67162.kext	Obsolete SCSI/ATA drivers for Acard
ACard671xSCSI.kext	Obsolete SCSI/ATA drivers for Acard
ACard6885M.kext	Obsolete SCSI/ATA drivers for Acard
ACard68xxM.kext	Obsolete SCSI/ATA drivers for Acard
ALF.kext	Presumably used for the Algebraic Logic Functional Programming Language.
ATI6000Controller.kext	ATI Native Driver for ATI Radeon HD 6000 Series GPU
ATINDRV.kext	ATI Native Driver, presumably for non-Radeon cards. See the notes from the PowerMac G3
ATIRNDRV.kext	Presumably for ATI Radeon Native Drivers.
ATIRadeon.kext	Obsolete PPC Only
ATIRadeon8500.kext	Obsolete PPC ATI Radeon 8500 driver.
ATIRadeon9700.kext	test
ATIRadeonX1000.kext	test
ATIRadeonX2000.kext	test
ATTOExpressPCIPlus.kext	PCI-E SCSI card drivers for ATTO
Apple02Audio.kext	Obsolete Legacy audio kext.
Apple16X50Serial.kext	Obsolete Used for serial connectors/adaptors
AppleACPIPlatform.kext	ACPI is the standard for Power Management in computers, interacts with the EFI in real Macs, has to do with controlling interrupts (IRQ), non-volatile RAM, controlling sleep, thermal settings, controlling the RTC, contains other kexts including AppleACPIButtons.kext, AppleACPIIEC.kext, AppleACPIPCI.kext.
AppleAD741x.kext	Digital temperature sensor driver.
AppleADBButtons.kext	Obsolete Apple Desktop Bus (or ADB) is an obsolete bit-serial computer bus connecting low-speed devices to computers. Used primarily on the Apple Macintosh platform, ADB equipment is still available but not supported by most Apple hardware manufactured since 1999. <you>(No idea what this actual kext does, doesn’t really matter)</you>
AppleADBKeyboard.kext	Obsolete Used for Apple Desktop Bus keyboards.
AppleADBMouse.kext	Obsolete, used for Apple Desktop Bus mice.
AppleADM103x.kext	ACPI-Compliant remote thermal monitor with integrated fan controller.
AppleADT746x.kext	Thermal management controller and voltage monitor.
AppleAHCIPort.kext	test
AppleAPIC.kext	http://en.wikipedia.org/wiki/Intel_APIC_Architecture
AppleAirPort.kext	Obsolete PPC Only - Airport kexts Name Definition AppleAirportFW.kext Obsolete PPC Only AppleAirportFWAP.kext Obsolete PPC Only
AppleBMC.kext	A baseboard management controller (BMC) is a specialized microcontroller embedded on the motherboard of a computer, generally a server. The BMC is the intelligence in the Intelligent Platform Management Interface (IPMI) architecture. The BMC manages the interface between system management software and platform hardware.
AppleBacklight.kext	Backlighting support for Notebook displays, ie: changing the brightness/power settings of the lcd.
AppleBlower.kext	Obsolete PPC Only, Most likely to do to with the fan, references in the binary to KeyLargo.
AppleCPUThermo.kext	Obsolete PPC Only, temperature sensor, references in binary to PPCI2CInterface
AppleCore99NVRAM.kext	Obsolete PPC Only.
AppleDallasDriver.kext	Obsolete Legacy Audio kext
AppleEFIRuntime.kext	Possibly used for EFI initialization of graphics card ROM BIOS.
AppleFCU.kext	Nothing to do with the Apple Federal Credit Union, going through ASCII strings in the binary seems to indicate some form of sensor polling for PowerPC I2C Interface sensors.
AppleFPButton.kext	test
AppleFWAudio.kext	FireWire audio
AppleFan.kext	Fan control
AppleFileSystemDriver.kext	General filesystem driver for HFS+, Apple RAID.
AppleFlashNVRAM.kext	Obsolete PPC Only, references to Jmicron in the binary, most likely has to do with flashing nvram as the name says.
AppleGPIO.kext	General Purpose Input/Output
AppleGW.kext	Graphics warning? Localizable strings and binary make reference to properly plugging the graphics card in, binary has nothing but button/alert text.
AppleGraphicsControl.kext	Presumably for dynamic GPU switching on things like the Macbook Pro which has two GPUs, has to do with controlling brightness as well.
AppleGraphicsPowerManagement.kext	Guess
AppleHDA.kext	High Definition Audio kext, contains other audio kexts including: AppleHDAController.kext, IOHDAFamily.kext, and AppleHDAHALPlugin.bundle.
AppleHDAController.kext	Found inside of AppleHDA.kext
AppleHIDKeyboard.kext	Human Interface Device = Keyboard controls.
AppleHIDMouse.kext	HID = Human Interface Device, mouse controls.
AppleHPET.kext	High Precision Event Timer: Complicated, see http://en.wikipedia.org/wiki/HPET
AppleHWClock.kext	test
AppleHWSensor.kext	test
AppleI2C.kext	Inter-Integrated Circuit, used for connecting low-speed peripherels to a motherboard.
AppleI2S.kext	Integrated Inter-chip Sound, an electrical serial bus interface standard used for connecting digital audio devices together
AppleI2SModemFamily.kext	Same as above, but for modems.
AppleIRController.kext	Driver for the infrared port used by the Apple Remote.
AppleIntelCPUPowerManagement.kext	Used for speedstepping on real Macs, known to cause kernel panics on OSx86 systems that do not have a properly patched DSDT. *note: this does not provide functionality from the kext, only stops the kernel panic from occuring.
AppleIntelGMA950.kext	Kernel extension for GMA 950 (mobility and desktop versions).
AppleIntelGMAX3100.kext	Kernel extension for GMA X3100 graphics cards. GMA X3100 always refers to the mobile version, there is no known support for the GMA 3100 (Without the X), the desktop version.
AppleIntelGMAX3100FB.kext	Framebuffer for GMA X3100
AppleIntelIntegratedFramebuffer.kext	Built-in framebuffer for Integrated Intel (GMA950?) graphics cards.
AppleK2.kext	Obsolete K2 is an older IO controller used with PowerMac G5’s, potentially obsolete? Nothing to do with Intel Macs at least.
AppleK2Driver.kext	Obsolete K2 is an older IO controller used with PowerMac G5’s, potentially obsolete? Nothing to do with Intel Macs at least.
AppleK2Fan.kext	Obsolete K2 is an older IO controller used with PowerMac G5’s, potentially obsolete? Nothing to do with Intel Macs at least.
AppleK2SATA.kext	Obsolete K2 is an older IO controller used with PowerMac G5’s, potentially obsolete? Nothing to do with Intel Macs at least.
AppleK2SATARoot.kext	ObsoleteK2 is an older IO controller used with PowerMac G5’s, potentially obsolete? Nothing to do with Intel Macs at least.
AppleKauaiATA.kext	An island in Hawaii, also an Obsolete PPC ATA controller used in older Macs.
AppleKeyLargo.kext	Obsolete The KeyLargo custom IC, the third major component of the Xserve architecture, is connected to the main PCI bus through a dedicated PCI-to-PCI bridge. It provides all the I/O functions except Ethernet and FireWire. The KeyLargo IC provides two USB root hubs, a UATA interface, and support for the LED display, also used in PowerMac G4’s.
AppleKeyswitch.kext	Obsolete Xserve G5’s keyswitch security prevents unauthorized hot-plugging and mounting of a USB or FireWire hard drive. When the keyswitch is locked, the CD is ejected. In addition, the Security System pane provides configuration support for USB keyboard and mouse.
AppleKiwiATA.kext	Obsolete I believe this is another IO Controller hub driver.
AppleKiwiRoot.kext	Obsolete See above.
AppleLED.kext	test
AppleLM7x.kext	test
AppleLM87.kext	test
AppleLM8x.kext	test
AppleLMUController.kext	test
AppleLPC.kext	test
AppleLSIFusionMPT.kext	test
AppleMCEDriver.kext	test
AppleMPIC.kext	test
AppleMacRISC2PE.kext	test
AppleMacRISC4PE.kext	Obsolete PPC only.
AppleMacRiscPCI.kext	test
AppleMaxim1989.kext	Obsolete PPC Only.
AppleMaxim6690.kext	Obsolete PPC Only.
AppleMediaBay.kext	test
AppleMikeyHIDDriver.kext	test
AppleMobileDevice.kext	test
AppleOnboardAudio.kext	test
AppleOnboardDisplay.kext	test
ApplePCCard16ATA.kext	test
ApplePCCardATA.kext	test
ApplePMU.kext	Obsolete Power Management Unit, twice outdated (once by the SMU, then by the SMC)
ApplePlatformEnabler.kext	support for non-ACPI compliant systems? (old kernel flag “Platform=X86PC” as opposed to Platform=ACPI)
AppleRAID.kext	Software RAID
AppleRAIDCard.kext	Hardware RAID card support
AppleRTC.kext	Used for controlling the Real-Time Clock, the chip used to keep the computer time even when the system is turned off.
AppleSEP.kext	This is a guess at best Signaling End Point, used for controlling signals in telecommunications, possibly having to do with modems. Info.plist makes reference to virtual interfaces and physical interconnects.
AppleSMBIOS.kext	A normal PC SMBIOS defines data structures (and access methods) in a BIOS which allows a user or application to store and retrieve information specifically about the computer in question. The AppleSMBIOS.kext does the same thing with the OS X System Profiler.
AppleSMBusController.kext	SMBus is a subset of I2C, used for communication with low-bandwidth devices on a motherboard, especially power related chips, such as temperature, fan, or voltage sensors, communicates with the ICH (I/O Controller Hub) on Intel chipsets, and with the MCP (Media Communications Processor) on nVidia chipsets.
AppleSMBusPCI.kext	SMBus is a subset of I2C, this kext resumably does the same thing as the SMBUSController except for low bandwidth PCI devices specifically.
AppleSMC.kext	System Manegement Controller, replaces the SMU, used for power management, optimization of airflow and keeping noise to a minimum inside the case.
AppleSMCLMU.kext	sensors for macbooks, macbook3,1 & macbook4,1 & macbook5,1 .
AppleSMU.kext	Obsolete The SMU manages thermal and power conditions to optimize the power and airflow while keeping audible noise to a minimum. Power consumption and temperature are monitored by the operating system, which communicates the necessary adjustments back to the SMU. The SMU makes the changes, slowing down or speeding up fans as necessary. Replaced by the SMC.
AppleSMUMonitor.kext	Obsolete Monitoring for the System Management Unit. Replaced by the SMC.
AppleSPU.kext	Obsolete PPC only, references ot keylargo and K2 in binary.
AppleSmartBatteryManager.kext	SBD (Smart Battery Data) is a method to monitor a rechargeable battery pack, initiated by Duracell and Intel. A special integrated circuit in the battery pack monitors the battery and reports information to the SMBus. This information might include: type, model number, manufacturer, characteristics, discharge rate, predicted remaining capacity, almost-discharged alarm so that the PC can shut down gracefully; temperature and voltage to provide safe fast-charging.
AppleStorageDrivers.kext	AppleStorageDrivers.kext contains these kexts Name Definition AppleATAPIStorage.kext test AppleHollywood.kext test AppleMemorexCDROMDriver.kext test AppleUSBODD.kext test AppleXserveRAID.kext test CanonEOS1D.kext test FWPreferredProtocolSpeed.kext test FireWireStorageDeviceSpecifics.kext test IOFireWireSerialBusProtocolSansPhysicalUnit.kext test LSI-FW-500.kext test MKE-LF-D211A.kext test MKE-SR-8171.kext test MaxTranserSizeOverrideDriver.kext test OxfordSemiconductor.kext test PioneerSuperDrive.kext test PreventMediaMountDriver.kext test QPSQueFire.kext test SanyoIDShot.kext test SonyXDCAMDriver.kext test StorageLynx.kext test UFIWriteProtectedMediaDriver.kext test USBStorageDeviceSpecifics.kext test WriteProtectedMediaDriver.kext test initioFWBridge.kext test
AppleSym8xx.kext	Symbios Logic SCSI driver.
AppleThermal.kext	test
AppleUSBAudio.kext	USB audio driver.
AppleUSBDisplays.kext	test
AppleUSBMultitouch.kext	Multi-touch trackpad driver for the Aluminium Macbooks.
AppleUSBTopCase.kext	reminder, make a new table for AppleUSBTCButtons.kext, AppleUSBTCKeyEventDriver.kext, AppleUSBTCKeyboard.kext, AppleUSBTCTrackpad.kext
AppleUpstreamUserClient.kext	test
AppleVIA.kext	test
AppleVSP.kext	Obsolete PPC only, makes reference to PowerMac G3 in binary, no idea what this actually does.
AppleXsanFilter.kext	test
Apple_iSight.kext	Webcam kext (iSight is Apple’s webcam name).
ArcMSR.kext	test
AudioDeviceTreeUpdater.kext	test
AudioIPCDriver.kext	test
BootCache.kext	test
CHUDKernLib.kext	test
CHUDProf.kext	test
CHUDUtils.kext	test
CM4040.kext	test
CRYPTOCardPCCard.kext	Smart card reader (for cryptographic cards).
Dont Steal Mac OS X.kext	Used to support memory page encryption and decryption, presumably through interaction with an EFI module.
GeForce.kext	One of three very important original Apple kexts required by OSx86 machines for nvidia graphics functionality. This kext is a MUST for QE/CI.
GeForcePPC.kext	test
I2CGPIO.kext	test
ICAClassicNotSeizeDriver.kext	test
ICAFWKodakProDriver.kext	test
IO80211Family.kext	Basic wireless framework driver, further functionality for specific cards are in other kexts located *inside* of this kext (under the Contents/PlugIns/ directory), such as support for Broadcom or Atheros chipsets (to name the two most commonly supported chipsets).
IOACPIFamily.kext	test
IOADBFamily.kext	test
IOAHCIFamily.kext	AHCI Input/Output family most likely a meta-kext Name Definition IOAHCISerialATAPI.kext test IOAHCIBlockStorage.kext test
IOATAFamily.kext	Meta-kext for ATA functionality? Name Definition AppleIntelPIIXATA.kext This is one of the main kexts used for SATA/ATA settings for the ICHx (I/O Controller Hub) family. If your ATA/SATA settings are not working and you’re using an ICHx southbridge, this is the first kext to look at. IOATABlockStorage test IOATAPIProtocolTransport.kext test
IOAudioFamily.kext	test
IOBDStorageFamily.kext	test
IOBluetoothFamily.kext	test
IOBluetoothHIDDriver.kext	test
IOCDStorageFamily.kext	test
IODVDStorageFamily.kext	test
IOFireWireAVC.kext	test
IOFireWireFamily.kext	test
IOFireWireIP.kext	test
IOFireWireSBP2.kext	test
IOFireWireSerialBusProtocolTransport.kext	test
IOGraphicsFamily.kext	test
IOHDAFamily.kext	Found inside of AppleHDA.kext
IOHDIXController.kext	Used for creation of and mounting of Disk Images, such as .dmg files.
IOHIDFamily.kext	Input/output of human interface devices, such as keyboards/mice.
Note on IOI2C	I�C (Inter-Integrated Circuit) is a multi-master serial computer bus invented by Philips that is used to attach low-speed peripherals to a motherboard, SMBus is a subset of this bus-type. Most of these are PPC ONLY - meaning completely OBSOLETE
IOI2CAD741x.kext	Obsolete PPC Only
IOI2CADT746x.kext	Obsolete PPC Only
IOI2CCPUVoltage.kext	Unibin - Add more info
IOI2CControllerPMU.kext	Obsolete PPC Only
IOI2CControllerPPC.kext	Obsolete PPC Only
IOI2CControllerSMU.kext	Obsolete PPC Only
IOI2CDeviceFCU.kext	Obsolete PPC Only
IOI2CDeviceLMU.kext	Unibin - Add more info
IOI2CDriveBayGPIO.kext	Obsolete PPC Only
IOI2CFamily.kext	Obsolete PPC Only
IOI2CHWClock.kext	Unibin - Add more info
IOI2CLM6x.kext	Obsolete PPC Only
IOI2CLM7x.kext	Obsolete PPC Only
IOI2CLM8x.kext	Obsolete PPC Only
IOI2CMaxim1631.kext	Obsolete PPC Only
IOI2CMaxim1989.kext	Obsolete PPC Only
IOI2CMaxim6690.kext	Obsolete PPC Only
IOI2CMotionSensor.kext	Obsolete PPC Only
IOI2CPulsar.kext	Unibin - Add more info
IOI2CSMUSat.kext	Obsolete PPC Only
IOI2CSlewClock.kext	Unibin - Add more info
IOKeyLargo.kext	test
IONDRVSupport.kext	test
IONetworkingFamily.kext	This kext provides a basic driver framework for Ethernet adaptors, further functionality for specific chipsets is provided by other kexts located *inside* of this kext (located under the Contents/PlugIns/ directory), such as support for Intel or Realtek chipsets (two of the most common ones).
IOPCCardFamily.kext	test
IOPCIFamily.kext	test
IOPlatformFunction.kext	test
IOPlatformPluginFamily.kext	test
IOSCSIArchitectureModelFamily.kext	test
IOSCSIParallelFamily.kext	test
IOSMBusFamily.kext	test
IOSerialFamily.kext	test
IOStorageFamily.kext	test
IOStreamFamily.kext	test
IOUSBFamily.kext	test
IOUSBMassStorageClass.kext	Needed for USB flash storage devices.
IOVideoFamily.kext	test
IPFirewall.kext	Pseudo Extension
ImmersionForceFeedback.kext	test
JMicronATA.kext	Exactly as it sounds, ATA driver for jmicron chipsets.
KeyLargoATA.kext	Obsolete Key Largo ATA drivers.
LSIUltra320.kext	Obsolete SCSI controller driver for LSUI Ultra 320.
LogitechForceFeedback.kext	test
MacIOGPIO.kext	Input/Output kext for General Purpose Input/Output
MegaRAID.kext	MegaRAID drivers.
NVDANV10Hal.kext	test
NVDANV20Hal.kext	test
NVDANV30Hal.kext	test
NVDANV40Hal.kext	One of three very important original Apple kexts required by OSx86 machines for nvidia graphics functionality. This kext provides support for 6xxx and 7xxx series nvidia cards.
NVDANV40HalPPC.kext	PowerPC equivalent of NVDANV40Hal.kext.
NVDANV50Hal.kext	One of three very important original Apple kexts required by OSx86 machines for nvidia graphics functionality. This kext provides support for 8xxx and 9xxx series nvidia cards.
NVDAResman.kext	One of three very important original Apple kexts required by OSx86 machines for nvidia graphics functionality. This kext is responsible for providing resolution changing capabilities with nvidia graphics cards.
NVDAResmanPPC.kext	Resolution changing for nvidia cards on PPC Macs.
NVSMU.kext	Possible nvidia system management unit, ROM controller potentially?
OSvKernDSPLib.kext	Kernel digital audio signal processing library?
PMUMotionSensor.kext	Presumably an outdated kext, since it refers to the PMU (Power Management Unit), which has since been replaced not only once by the SMU (System Management Unit), but twice, by the SMC (System Management Controller).
PPP.kext	Point-to-Point Protocol kext, associated with PPPoE.ppp, PPPSerial.ppp, PPTP.ppp, and Radius.ppp, all located inside /System/Library/Extensions/.
SCR24X_Apple_Driver.kext	PCMCIA card driver for SCR24X smart card reader.
Seatbelt.kext	Used for sandboxing, provides an additional layer of security when running programs downloaded from the internet or potentially dangerous code.
SM56KUSBAudioFamily.kext	Note: New table for AppleSM56KUSBAudio.kext and AppleSM56KUSBModemFamily.kext
SMCMotionSensor.kext	Current motion sensor kext for Macbooks, which have an integrated motion sensor, some games make use of it, mainly use to lock the hard drive in place if it detects sudden motion (such as dropping), or can be used in case of theft to trigger an alarm.
SoftRAID.kext	test
System.kext	System.kext contains lots of Pseudo-Extensions Name Description AppleNMI.kext Pseudo-Extension - A non-maskable interrupt (NMI) is a computer processor interrupt that cannot be ignored by standard interrupt masking techniques in the system. It is typically used to signal attention for non-recoverable hardware errors. (Some NMIs may be masked, but only by using proprietary methods specific to the particular NMI.) ApplePlatformFamily.kext test BSDKernel.kext test BSDKernel6.0.kext test IOKit.kext test IOKit6.0.kext test IONVRAMFamily.kext test IOSystemManagement.kext test Libkern.kext test Libkern6.0.kext test MACFramework.kext test Mach.kext test Mach6.0.kext test System6.0.kext test Unsupported.kext test
TMSafetyNet.kext	Used to protect accidental or intentional deletion of time machine backups. More info
VirtualAudioDriver.kext	Most likely this Virtual Audio driver allows you to route the audio output of any program into the input of another
autofs.kext	Used to eliminate the need to mount filesystems manually, probably guesses the filesystem and mounts it automatically with the available/appropriate options that OS X has for that specific filesystem.
cddafs.kext	Compact Disc Digital Audio filesystem, presumably used to read/write audio cds following the CDDA standard.
iPodDriver.kext	Absolutely mind-boggling what this kext could possibly ever do. Maybe someday its true mysteries will be explored.
iTunesPhoneDriver.kext	iPhone driver, same as iPodDriver above, but for the iPhone.
mcxalr.kext	Managed Client application launch restriction tool and agent - Used internally to manage and implement application launch restrictions for Managed Clients (MCX). Also used by Workgroup Manager to sign applications as root to insure all permissions and modes are preserved.
msdosfs.kext	ms-dos filesystem driver.
ntfs.kext	New Technology File System driver, allows OS X to read Windows NTFS volumes.
nvenet.kext	Nvidia ethernet, has to do with ethernet on MCP73/MCP79 systems.
smbfs.kext	Samba filesystem kext, responsible for providing the ability to mount remote Windows file shares using Samba
udf.kext	Universal Disc Format filesystem driver, used to read/write to UDF formatted cd/dvd’s.
webdav_fs.kext	Filesystem driver for WebDAV.Wikipedia: Web-based Distributed Authoring and Versioning, or WebDAV, is a set of extensions to the Hypertext Transfer Protocol (HTTP) that allows users to collaboratively edit and manage files on remote World Wide Web servers.
webfilter.kext	test
zfs.readonly.kext	Read-only capability for the ZFS filesystem. There is a ZFS read/write kext available if one wishes to experiment with the ZFS filesystem under OS X.

OSx86 Community Contributed KEXTs

Name	Definition (and Author, if known/applicable)
ALCinject.kext
AppleDecrypt.kext	the newest decryption kext available, replaces dsmos.kext for decryption of OS X binaries. For more info on the encrypted binaries see this article by Amit Singh, author of “OS X Internals”.
AppleSMBIOSEFI.kext	Kext written by Chun-Nan to resolve SMBIOS issues as opposed to hacking the original AppleSMBIOS.kext
SMBIOSEnabler.kext	Kext written by Kabyl to resolve SMBIOS issues as opposed to hacking the original AppleSMBIOS.kext (deprecated in favour of SMBIOSResolver)
SMBIOSResolver.kext	Kext written by Superhai to resolve SMBIOS issues as opposed to hacking the original AppleSMBIOS.kext
dsmos.kext	Used to decrypt binaries in the OS X Operating System, replaces Fakesmc.kext. For more info on the encrypted binaries see this article by Amit Singh, author of “OS X Internals”.
forcedeth.kext	Outdated kext used to provide basic ethernet adaptor functionality for nforce-based motherboards.
HDAEnabler.kext	High Definition Audio Enabler, provides increased functionality from ALCinject, with fake outputs in System Profiler as well.
Intel82566MM.kext	A kext graciously crafted by Guijin Ding, can be used to get certain Intel LAN chipsets working properly, source available at his blog. Based off the open source e1000 driver from Linux/BSD.
Disabler.kext	Used to disable kexts known to cause issues on standard PC’s, specifically AppleIntelCPUPowerManagement.kext, and AppleEFIRuntime.kext
Natit.kext	This kext injects pre-established values into the OS X IOREG from a graphics card, can be ATI, Intel, or nVidia depending on the version of the natit.kext used. replace by “Graphic Enabler=Yes“
nforcelan.kext	newest kext for providing driver functionality for nforce chipset based motherboards.
NVEnabler.kext	This kext injects pre-established values that a nvidia graphics card provides into the OS X IOREG, enabling graphics driver functionality even 64Bit. replace by “Graphic Enabler=Yes“
NVkush.kext	This kext injects pre-established values that a nvidia graphics card provides into the OS X IOREG, enabling graphics driver functionality. replace by “Graphic Enabler=Yes“
NVinject.kext	This kext injects pre-established values that a nvidia graphics card provides into the OS X IOREG, enabling graphics driver functionality. replace by “Graphic Enabler=Yes“
OpenHaltRestart.kext	A kext provided by Psystar Inc., used to fix several shutdown/restart issues, no known correlation to sleep issues. Can be downloaded from Psystar’s website.
Titan.kext	This kext injects pre-established values that a nvidia graphics card provides into the OS X IOREG, enabling graphics driver functionality. replace by “Graphic Enabler=Yes“

To be added: agpgart, EHCISleepEnabler, HDAEnabler.kext, VoodooHDA.kext