CT5421
High Precision Event Timer
Intel 6300ESB LPC Interface Controller - 25A1
Intel 6300ESB SMBus Controller - 25A4
Intel 6300ESB USB Universal Host Controller - 25A9
Intel 6300ESB Ultra ATA Storage/SATA Controller - 25A3
Intel 6300ESB Watchdog Timer - 25AB
Windows Vista, Windows Vista (64 bit), Windows XP, Windows XP (64 bit)
8.3.1.1011 (4-Mar-2008)
Intel Chipset Software Installation Utility
Sathishkumar (DG Staff Member) on 7-Feb-2011
To get the CT5421 driver, click the green download button above. After you complete your download, move on to Step 2.
If the driver listed is not the right version or operating system, search our driver archive for the correct version. Enter ASUS CT5421 into the search box above and then submit. In the results, choose the best match for your PC and operating system.
Tech Tip: If you are having trouble deciding which is the right driver, try the ASUS Driver Update Utility. It is a software utility which automatically finds and downloads the right driver.
To find the newest driver, you may need to visit the ASUS website. Most major device manufacturers update their drivers regularly.
After downloading your new driver, installation is the next step. On Windows, utilize the built-in Device Manager utility to manage this process. This tool provides a comprehensive view of all system-recognized devices and their associated drivers. To complete the installation, a system restart is typically required for the driver update to take effect.
Tech Tip: Driver downloads and updates come in a variety of file formats with different file extensions. For example, you may have downloaded an EXE, INF, ZIP, or SYS file. Each file type has a slighty different installation procedure to follow.
For more help, visit our Driver Support Page for step-by-step videos on how to install drivers for every file type.
The following files are found inside the driver download file.
| Name | Size | Date |
|---|---|---|
| INF/All/5000XZVP.inf | 15.3 KB | 12 Dec 2007 |
| INF/All/5000xzvp.cat | 19.2 KB | 12 Dec 2007 |
| INF/All/852.cat | 7.8 KB | 12 Dec 2007 |
| INF/All/852.inf | 4.0 KB | 12 Dec 2007 |
| INF/All/855.cat | 6.8 KB | 12 Dec 2007 |
| INF/All/855.inf | 3.6 KB | 12 Dec 2007 |
| INF/All/865.cat | 9.8 KB | 12 Dec 2007 |
| INF/All/865.inf | 4.8 KB | 12 Dec 2007 |
| INF/All/915.cat | 11.6 KB | 12 Dec 2007 |
| INF/All/915.inf | 3.9 KB | 12 Dec 2007 |
| INF/All/915M.cat | 7.5 KB | 12 Dec 2007 |
| INF/All/915M.inf | 3.4 KB | 12 Dec 2007 |
| INF/All/945.cat | 19.2 KB | 12 Dec 2007 |
| INF/All/945.inf | 4.6 KB | 12 Dec 2007 |
| INF/All/945GM.inf | 4.1 KB | 12 Dec 2007 |
| INF/All/945gm.cat | 10.9 KB | 12 Dec 2007 |
| INF/All/965g.cat | 14.1 KB | 12 Dec 2007 |
| INF/All/965g.inf | 4.9 KB | 12 Dec 2007 |
| INF/All/965m.cat | 12.8 KB | 12 Dec 2007 |
| INF/All/965m.inf | 4.1 KB | 12 Dec 2007 |
| INF/All/E7220.cat | 10.4 KB | 12 Dec 2007 |
| INF/All/E7220.inf | 3.7 KB | 12 Dec 2007 |
| INF/All/E7230.inf | 3.5 KB | 12 Dec 2007 |
| INF/All/E7520.cat | 9.6 KB | 12 Dec 2007 |
| INF/All/E7520.inf | 9.3 KB | 12 Dec 2007 |
| INF/All/E8500.cat | 10.5 KB | 12 Dec 2007 |
| INF/All/E8500.inf | 13.9 KB | 12 Dec 2007 |
| INF/All/ESB2id2.inf | 3.7 KB | 12 Dec 2007 |
| INF/All/ESB2ide.inf | 3.7 KB | 12 Dec 2007 |
| INF/All/ESB2usb.inf | 5.3 KB | 12 Dec 2007 |
| INF/All/dmi_pci.cat | 9.1 KB | 12 Dec 2007 |
| INF/All/dmi_pci.inf | 3.7 KB | 12 Dec 2007 |
| INF/All/e7230.cat | 8.1 KB | 12 Dec 2007 |
| INF/All/esb2id2.cat | 10.0 KB | 12 Dec 2007 |
| INF/All/esb2ide.cat | 10.0 KB | 12 Dec 2007 |
| INF/All/esb2usb.cat | 11.6 KB | 12 Dec 2007 |
| INF/All/g33q35.cat | 11.3 KB | 12 Dec 2007 |
| INF/All/g33q35.inf | 6.2 KB | 12 Dec 2007 |
| INF/All/ich5core.cat | 10.4 KB | 12 Dec 2007 |
| INF/All/ich5core.inf | 5.1 KB | 12 Dec 2007 |
| INF/All/ich5id2.cat | 10.0 KB | 12 Dec 2007 |
| INF/All/ich5id2.inf | 4.3 KB | 12 Dec 2007 |
| INF/All/ich5ide.cat | 10.0 KB | 12 Dec 2007 |
| INF/All/ich5ide.inf | 4.3 KB | 12 Dec 2007 |
| INF/All/ich5usb.cat | 13.6 KB | 12 Dec 2007 |
| INF/All/ich5usb.inf | 8.0 KB | 12 Dec 2007 |
| INF/All/ich6core.cat | 11.6 KB | 12 Dec 2007 |
| INF/All/ich6core.inf | 5.0 KB | 12 Dec 2007 |
| INF/All/ich6id2.cat | 10.0 KB | 12 Dec 2007 |
| INF/All/ich6id2.inf | 4.2 KB | 12 Dec 2007 |
| INF/All/ich6ide.cat | 10.0 KB | 12 Dec 2007 |
| INF/All/ich6ide.inf | 4.2 KB | 12 Dec 2007 |
| INF/All/ich6usb.cat | 13.6 KB | 12 Dec 2007 |
| INF/All/ich6usb.inf | 6.1 KB | 12 Dec 2007 |
| INF/All/ich7core.cat | 19.2 KB | 12 Dec 2007 |
| INF/All/ich7core.inf | 5.9 KB | 12 Dec 2007 |
| INF/All/ich7id2.cat | 10.0 KB | 12 Dec 2007 |
| INF/All/ich7id2.inf | 4.0 KB | 12 Dec 2007 |
| INF/All/ich7ide.cat | 10.0 KB | 12 Dec 2007 |
| INF/All/ich7ide.inf | 4.0 KB | 12 Dec 2007 |
| INF/All/ich7usb.cat | 13.6 KB | 12 Dec 2007 |
| INF/All/ich7usb.inf | 6.2 KB | 12 Dec 2007 |
| INF/All/ich8core.cat | 11.2 KB | 12 Dec 2007 |
| INF/All/ich8core.inf | 6.0 KB | 12 Dec 2007 |
| INF/All/ich8id2.cat | 10.0 KB | 12 Dec 2007 |
| INF/All/ich8id2.inf | 4.2 KB | 12 Dec 2007 |
| INF/All/ich8ide.cat | 10.0 KB | 12 Dec 2007 |
| INF/All/ich8ide.inf | 4.2 KB | 12 Dec 2007 |
| INF/All/ich8smb.cat | 9.3 KB | 12 Dec 2007 |
| INF/All/ich8smb.inf | 3.4 KB | 12 Dec 2007 |
| INF/All/ich8usb.cat | 10.0 KB | 12 Dec 2007 |
| INF/All/ich8usb.inf | 7.0 KB | 12 Dec 2007 |
| INF/All/ich9core.cat | 14.1 KB | 12 Dec 2007 |
| INF/All/ich9core.inf | 6.7 KB | 12 Dec 2007 |
| INF/All/ich9id2.cat | 14.1 KB | 12 Dec 2007 |
| INF/All/ich9id2.inf | 4.5 KB | 12 Dec 2007 |
| INF/All/ich9ide.cat | 14.1 KB | 12 Dec 2007 |
| INF/All/ich9ide.inf | 4.5 KB | 12 Dec 2007 |
| INF/All/ich9smb.cat | 19.2 KB | 12 Dec 2007 |
| INF/All/ich9smb.inf | 3.4 KB | 12 Dec 2007 |
| INF/All/ich9usb.cat | 19.2 KB | 12 Dec 2007 |
| INF/All/ich9usb.inf | 5.9 KB | 12 Dec 2007 |
| INF/All/ichXdev.inf | 3.2 KB | 12 Dec 2007 |
| INF/All/ichxdev.cat | 8.8 KB | 12 Dec 2007 |
| INF/AsusSetup.exe | 503.2 KB | 28 Jan 2007 |
| INF/AsusSetup.ini | 1.1 KB | 30 Oct 2007 |
| INF/AsusSetup_64.INI | 2.7 KB | 4 Jan 2008 |
| INF/AsusSetup_Vista.ini | 2.2 KB | 4 Jan 2008 |
| INF/AsusSetup_Vista64.INI | 2.7 KB | 4 Jan 2008 |
| INF/AsusSetup_XP.ini | 2.9 KB | 4 Jan 2008 |
| INF/CSVer.dll | 53.2 KB | 12 Dec 2007 |
| INF/English.ini | 542 bytes | 15 Jun 2005 |
| INF/French.ini | 793 bytes | 28 Jul 2005 |
| INF/German.ini | 736 bytes | 28 Jul 2005 |
| INF/Help.txt | 727 bytes | 15 Sep 2006 |
| INF/IIF2.ini | 1.6 KB | 17 Jul 2007 |
| INF/Japanese.ini | 586 bytes | 27 Jul 2005 |
| INF/Lang/CHIP/ARA/ChipsetARA.dll | 65.5 KB | 12 Dec 2007 |
| INF/Lang/CHIP/ARA/license.txt | 20.2 KB | 15 Nov 2005 |
| INF/Lang/CHIP/ARB/license.txt | 9.0 KB | 15 Nov 2005 |
| INF/Lang/CHIP/CHS/ChipsetCHS.dll | 61.4 KB | 12 Dec 2007 |
| INF/Lang/CHIP/CHS/license.txt | 18.2 KB | 15 Nov 2005 |
| INF/Lang/CHIP/CHT/ChipsetCHT.dll | 61.4 KB | 12 Dec 2007 |
| INF/Lang/CHIP/CHT/license.txt | 18.8 KB | 15 Nov 2005 |
| INF/Lang/CHIP/CSY/ChipsetCSY.dll | 69.6 KB | 12 Dec 2007 |
| INF/Lang/CHIP/CSY/license.txt | 23.2 KB | 15 Nov 2005 |
| INF/Lang/CHIP/DAN/ChipsetDAN.dll | 73.7 KB | 12 Dec 2007 |
| INF/Lang/CHIP/DAN/license.txt | 23.9 KB | 15 Nov 2005 |
| INF/Lang/CHIP/DEU/ChipsetDEU.dll | 73.7 KB | 12 Dec 2007 |
| INF/Lang/CHIP/DEU/license.txt | 25.3 KB | 15 Nov 2005 |
| INF/Lang/CHIP/ELL/ChipsetELL.dll | 73.7 KB | 12 Dec 2007 |
| INF/Lang/CHIP/ELL/license.txt | 25.5 KB | 15 Nov 2005 |
| INF/Lang/CHIP/ENG/license.txt | 11.4 KB | 15 Nov 2005 |
| INF/Lang/CHIP/ENU/ChipsetENU.dll | 57.3 KB | 12 Dec 2007 |
| INF/Lang/CHIP/ENU/license.txt | 11.3 KB | 15 Nov 2005 |
| INF/Lang/CHIP/ESP/ChipsetESP.dll | 73.7 KB | 12 Dec 2007 |
| INF/Lang/CHIP/ESP/license.txt | 24.1 KB | 15 Nov 2005 |
| INF/Lang/CHIP/FIN/ChipsetFIN.dll | 69.6 KB | 12 Dec 2007 |
| INF/Lang/CHIP/FIN/license.txt | 23.4 KB | 15 Nov 2005 |
| INF/Lang/CHIP/FRA/ChipsetFRA.dll | 73.7 KB | 12 Dec 2007 |
| INF/Lang/CHIP/FRA/license.txt | 24.5 KB | 15 Nov 2005 |
| INF/Lang/CHIP/FRC/license.txt | 13.2 KB | 15 Nov 2005 |
| INF/Lang/CHIP/HEB/ChipsetHEB.dll | 65.5 KB | 12 Dec 2007 |
| INF/Lang/CHIP/HEB/license.txt | 19.8 KB | 15 Nov 2005 |
| INF/Lang/CHIP/HUN/ChipsetHUN.dll | 73.7 KB | 12 Dec 2007 |
| INF/Lang/CHIP/HUN/license.txt | 24.4 KB | 15 Nov 2005 |
| INF/Lang/CHIP/ITA/ChipsetITA.dll | 73.7 KB | 12 Dec 2007 |
| INF/Lang/CHIP/ITA/license.txt | 24.7 KB | 15 Nov 2005 |
| INF/Lang/CHIP/JPN/ChipsetJPN.dll | 65.5 KB | 12 Dec 2007 |
| INF/Lang/CHIP/JPN/license.txt | 21.4 KB | 15 Nov 2005 |
| INF/Lang/CHIP/KOR/ChipsetKOR.dll | 65.5 KB | 12 Dec 2007 |
| INF/Lang/CHIP/KOR/license.txt | 21.7 KB | 15 Nov 2005 |
| INF/Lang/CHIP/NLD/ChipsetNLD.dll | 73.7 KB | 12 Dec 2007 |
| INF/Lang/CHIP/NLD/license.txt | 24.7 KB | 15 Nov 2005 |
| INF/Lang/CHIP/NOR/ChipsetNOR.dll | 69.6 KB | 12 Dec 2007 |
| INF/Lang/CHIP/NOR/license.txt | 23.3 KB | 15 Nov 2005 |
| INF/Lang/CHIP/PLK/ChipsetPLK.dll | 73.7 KB | 12 Dec 2007 |
| INF/Lang/CHIP/PLK/license.txt | 25.4 KB | 15 Nov 2005 |
| INF/Lang/CHIP/PTB/ChipsetPTB.dll | 73.7 KB | 12 Dec 2007 |
| INF/Lang/CHIP/PTB/license.txt | 23.5 KB | 15 Nov 2005 |
| INF/Lang/CHIP/PTG/ChipsetPTG.dll | 73.7 KB | 12 Dec 2007 |
| INF/Lang/CHIP/PTG/license.txt | 24.1 KB | 15 Nov 2005 |
| INF/Lang/CHIP/RUS/ChipsetRUS.dll | 73.7 KB | 12 Dec 2007 |
| INF/Lang/CHIP/RUS/license.txt | 25.0 KB | 15 Nov 2005 |
| INF/Lang/CHIP/SVE/ChipsetSVE.dll | 69.6 KB | 12 Dec 2007 |
| INF/Lang/CHIP/SVE/license.txt | 23.7 KB | 15 Nov 2005 |
| INF/Lang/CHIP/THA/ChipsetTHA.dll | 69.6 KB | 12 Dec 2007 |
| INF/Lang/CHIP/THA/license.txt | 22.9 KB | 15 Nov 2005 |
| INF/Lang/CHIP/TRK/ChipsetTRK.dll | 73.7 KB | 12 Dec 2007 |
| INF/Lang/CHIP/TRK/license.txt | 24.0 KB | 15 Nov 2005 |
| INF/SChinese.ini | 486 bytes | 8 Aug 2005 |
| INF/Setup.exe | 883.2 KB | 17 Dec 2007 |
| INF/TChinese.ini | 487 bytes | 15 Jun 2005 |
| INF/USBCopy2.exe | 106.5 KB | 30 Jun 2006 |
| INF/Usb/32/AsusSetup.exe | 495.6 KB | 27 Sep 2006 |
| INF/Usb/32/AsusSetup.ini | 1.1 KB | 2 Jan 2007 |
| INF/Usb/32/USBCopy2.exe | 106.5 KB | 30 Jun 2006 |
| INF/Usb/32/USBReg.exe | 106.5 KB | 23 Jun 2006 |
| INF/Usb/32/UpdateUsb.exe | 32.8 KB | 23 Jun 2006 |
| INF/Usb/64/AsusSetup.exe | 495.6 KB | 27 Sep 2006 |
| INF/Usb/64/AsusSetup.ini | 1.1 KB | 2 Jan 2007 |
| INF/Usb/64/USBCopy2.exe | 106.5 KB | 30 Jun 2006 |
| INF/Usb/64/USBReg.exe | 30.2 KB | 23 Jun 2006 |
| INF/Usb/64/UpdateUSB.exe | 30.7 KB | 23 Jun 2006 |
| INF/Usb/AsusSetup.exe | 495.6 KB | 27 Sep 2006 |
| INF/Usb/AsusSetup.ini | 853 bytes | 2 Jan 2007 |
| INF/Vista/5000XZVP.inf | 15.3 KB | 12 Dec 2007 |
| INF/Vista/5000xzvp.cat | 19.2 KB | 12 Dec 2007 |
| INF/Vista/945.cat | 19.2 KB | 12 Dec 2007 |
| INF/Vista/945.inf | 4.6 KB | 12 Dec 2007 |
| INF/Vista/945GM.inf | 4.1 KB | 12 Dec 2007 |
| INF/Vista/945gm.cat | 10.9 KB | 12 Dec 2007 |
| INF/Vista/965g.cat | 14.1 KB | 12 Dec 2007 |
| INF/Vista/965g.inf | 4.9 KB | 12 Dec 2007 |
| INF/Vista/965m.cat | 12.8 KB | 12 Dec 2007 |
| INF/Vista/965m.inf | 4.1 KB | 12 Dec 2007 |
| INF/Vista/ESB2id2.inf | 3.7 KB | 12 Dec 2007 |
| INF/Vista/ESB2ide.inf | 3.7 KB | 12 Dec 2007 |
| INF/Vista/ESB2usb.inf | 5.3 KB | 12 Dec 2007 |
| INF/Vista/INFAnswr.txt | 4.2 KB | 12 Dec 2007 |
| INF/Vista/dmi_pci.cat | 11.1 KB | 12 Dec 2007 |
| INF/Vista/dmi_pci.inf | 3.7 KB | 12 Dec 2007 |
| INF/Vista/esb2id2.cat | 8.3 KB | 12 Dec 2007 |
| INF/Vista/esb2ide.cat | 8.3 KB | 12 Dec 2007 |
| INF/Vista/esb2usb.cat | 11.1 KB | 12 Dec 2007 |
| INF/Vista/g33q35.cat | 11.3 KB | 12 Dec 2007 |
| INF/Vista/g33q35.inf | 6.2 KB | 12 Dec 2007 |
| INF/Vista/ich7core.cat | 19.2 KB | 12 Dec 2007 |
| INF/Vista/ich7core.inf | 5.9 KB | 12 Dec 2007 |
| INF/Vista/ich7id2.cat | 8.3 KB | 12 Dec 2007 |
| INF/Vista/ich7id2.inf | 4.0 KB | 12 Dec 2007 |
| INF/Vista/ich7ide.cat | 8.3 KB | 12 Dec 2007 |
| INF/Vista/ich7ide.inf | 4.0 KB | 12 Dec 2007 |
| INF/Vista/ich7usb.cat | 11.1 KB | 12 Dec 2007 |
| INF/Vista/ich7usb.inf | 6.2 KB | 12 Dec 2007 |
| INF/Vista/ich8ahci.cat | 7.8 KB | 12 Dec 2007 |
| INF/Vista/ich8ahci.inf | 3.6 KB | 12 Dec 2007 |
| INF/Vista/ich8core.cat | 11.2 KB | 12 Dec 2007 |
| INF/Vista/ich8core.inf | 6.0 KB | 12 Dec 2007 |
| INF/Vista/ich8id2.cat | 8.3 KB | 12 Dec 2007 |
| INF/Vista/ich8id2.inf | 4.2 KB | 12 Dec 2007 |
| INF/Vista/ich8ide.cat | 8.3 KB | 12 Dec 2007 |
| INF/Vista/ich8ide.inf | 4.2 KB | 12 Dec 2007 |
| INF/Vista/ich8smb.cat | 11.1 KB | 12 Dec 2007 |
| INF/Vista/ich8smb.inf | 3.4 KB | 12 Dec 2007 |
| INF/Vista/ich8usb.cat | 11.1 KB | 12 Dec 2007 |
| INF/Vista/ich8usb.inf | 7.0 KB | 12 Dec 2007 |
| INF/Vista/ich9ahci.cat | 14.1 KB | 12 Dec 2007 |
| INF/Vista/ich9ahci.inf | 3.6 KB | 12 Dec 2007 |
| INF/Vista/ich9core.cat | 14.1 KB | 12 Dec 2007 |
| INF/Vista/ich9core.inf | 6.7 KB | 12 Dec 2007 |
| INF/Vista/ich9id2.cat | 14.1 KB | 12 Dec 2007 |
| INF/Vista/ich9id2.inf | 4.5 KB | 12 Dec 2007 |
| INF/Vista/ich9ide.cat | 14.1 KB | 12 Dec 2007 |
| INF/Vista/ich9ide.inf | 4.5 KB | 12 Dec 2007 |
| INF/Vista/ich9smb.cat | 19.2 KB | 12 Dec 2007 |
| INF/Vista/ich9smb.inf | 3.4 KB | 12 Dec 2007 |
| INF/Vista/ich9usb.cat | 19.2 KB | 12 Dec 2007 |
| INF/Vista/ich9usb.inf | 5.9 KB | 12 Dec 2007 |
| INF/Vista/ichXdev.inf | 3.2 KB | 12 Dec 2007 |
| INF/Vista/ichxdev.cat | 11.1 KB | 12 Dec 2007 |
| INF/difxapi.dll | 319.5 KB | 10 Nov 2006 |
| INF/readme.txt | 40.2 KB | 12 Dec 2007 |
| INF/x64/Difx64.exe | 97.3 KB | 17 Dec 2007 |
| INF/x64/difxapi.dll | 525.8 KB | 10 Nov 2006 |