Dell Studio Laptop 1558 Driver Download (Official)
The Studio Laptop 1558 is a popular graphics card manufactured by Dell. This driver fixes screen glitches, unwanted artifacts, stuttering or glitchy video and even screen tearing. This version of "R264614.exe" is rated (5 out of 5 stars) based on 45 downloads and 9 reviews. The uploader reports that this update will work successfully on PCs running Windows 7. The total disk space used for this update is 42.2 MB.
Supported Models
Studio Laptop 1558
Intel(R) 4 Series Internal Chipset
Intel(R) B43 Express Chipset
Intel(R) G41 Express Chipset
Intel(R) G45/G43 Express Chipset
Intel(R) Graphics Media Accelerator HD
Intel(R) Q45/Q43 Express Chipset
Intel(R) Turbo Boost Technology Driver
Manufacturers
Supported Operating Systems
Windows 7 (64 bit)
File Name
Versions
8.15.10.2097 (18-Apr-2010)
Additional Notes
Graphics Media Accelerator Driver
Uploaded By
Sathishkumar (DG Staff Member) on 14-Jun-2011
Related Driver Updates
Driver Contents File List
The following files are found inside the driver download file.
| Name | Size | Date |
|---|---|---|
| DIFxAPI.dll | 319.5 KB | 2 Nov 2006 |
| Graphics/GfxUI.exe | 3.1 MB | 22 Mar 2010 |
| Graphics/GfxUI.exe.config | 151 bytes | 15 Mar 2010 |
| Graphics/Gfxres.ar-SA.resources | 138.3 KB | 15 Mar 2010 |
| Graphics/Gfxres.cs-CZ.resources | 117.1 KB | 15 Mar 2010 |
| Graphics/Gfxres.da-DK.resources | 112.6 KB | 15 Mar 2010 |
| Graphics/Gfxres.de-DE.resources | 121.1 KB | 15 Mar 2010 |
| Graphics/Gfxres.el-GR.resources | 176.8 KB | 15 Mar 2010 |
| Graphics/Gfxres.en-US.resources | 108.6 KB | 15 Mar 2010 |
| Graphics/Gfxres.es-ES.resources | 121.3 KB | 15 Mar 2010 |
| Graphics/Gfxres.fi-FI.resources | 117.0 KB | 15 Mar 2010 |
| Graphics/Gfxres.fr-FR.resources | 119.1 KB | 15 Mar 2010 |
| Graphics/Gfxres.he-IL.resources | 132.1 KB | 15 Mar 2010 |
| Graphics/Gfxres.hu-HU.resources | 117.9 KB | 15 Mar 2010 |
| Graphics/Gfxres.it-IT.resources | 123.9 KB | 15 Mar 2010 |
| Graphics/Gfxres.ja-JP.resources | 134.8 KB | 15 Mar 2010 |
| Graphics/Gfxres.ko-KR.resources | 121.6 KB | 15 Mar 2010 |
| Graphics/Gfxres.nb-NO.resources | 113.2 KB | 15 Mar 2010 |
| Graphics/Gfxres.nl-NL.resources | 117.9 KB | 15 Mar 2010 |
| Graphics/Gfxres.pl-PL.resources | 116.8 KB | 15 Mar 2010 |
| Graphics/Gfxres.pt-BR.resources | 118.7 KB | 15 Mar 2010 |
| Graphics/Gfxres.pt-PT.resources | 117.4 KB | 15 Mar 2010 |
| Graphics/Gfxres.ru-RU.resources | 163.8 KB | 15 Mar 2010 |
| Graphics/Gfxres.sk-SK.resources | 116.4 KB | 15 Mar 2010 |
| Graphics/Gfxres.sl-SI.resources | 112.7 KB | 15 Mar 2010 |
| Graphics/Gfxres.sv-SE.resources | 117.7 KB | 15 Mar 2010 |
| Graphics/Gfxres.th-TH.resources | 188.1 KB | 15 Mar 2010 |
| Graphics/Gfxres.tr-TR.resources | 119.5 KB | 15 Mar 2010 |
| Graphics/Gfxres.zh-CN.resources | 101.3 KB | 15 Mar 2010 |
| Graphics/Gfxres.zh-TW.resources | 102.4 KB | 15 Mar 2010 |
| Graphics/IGFXDEVLib.dll | 4.1 KB | 15 Mar 2010 |
| Graphics/difx32.dll | 319.5 KB | 2 Nov 2006 |
| Graphics/difx64.dll | 525.8 KB | 2 Nov 2006 |
| Graphics/difx64.exe | 152.6 KB | 22 Mar 2010 |
| Graphics/gfxSrvc.dll | 119.3 KB | 15 Mar 2010 |
| Graphics/hccutils.dll | 108.5 KB | 15 Mar 2010 |
| Graphics/hkcmd.exe | 391.2 KB | 22 Mar 2010 |
| Graphics/ig4dev32.dll | 4.1 MB | 15 Mar 2010 |
| Graphics/ig4dev64.dll | 5.5 MB | 15 Mar 2010 |
| Graphics/ig4icd32.dll | 6.1 MB | 15 Mar 2010 |
| Graphics/ig4icd64.dll | 8.1 MB | 15 Mar 2010 |
| Graphics/igcompkrng500.bin | 439.3 KB | 15 Mar 2010 |
| Graphics/igcompkrng575.bin | 127.9 KB | 15 Mar 2010 |
| Graphics/igd10umd32.dll | 3.9 MB | 15 Mar 2010 |
| Graphics/igd10umd64.dll | 4.1 MB | 15 Mar 2010 |
| Graphics/igdkmd64.sys | 7.9 MB | 15 Mar 2010 |
| Graphics/igdlh.cat | 375.0 KB | 22 Mar 2010 |
| Graphics/igdlh64.inf | 89.2 KB | 15 Mar 2010 |
| Graphics/igdumd32.dll | 4.5 MB | 15 Mar 2010 |
| Graphics/igdumd64.dll | 6.0 MB | 15 Mar 2010 |
| Graphics/igdumdx32.dll | 550.9 KB | 15 Mar 2010 |
| Graphics/igfcg500m.bin | 92.3 KB | 15 Mar 2010 |
| Graphics/igfcg575m.bin | 51.1 KB | 15 Mar 2010 |
| Graphics/igfxTMM.dll | 377.9 KB | 15 Mar 2010 |
| Graphics/igfxcpl.cpl | 127.0 KB | 15 Mar 2010 |
| Graphics/igfxdev.dll | 268.8 KB | 15 Mar 2010 |
| Graphics/igfxdo.dll | 142.3 KB | 15 Mar 2010 |
| Graphics/igfxdv32.dll | 226.8 KB | 15 Mar 2010 |
| Graphics/igfxexps.dll | 27.6 KB | 15 Mar 2010 |
| Graphics/igfxext.exe | 222.7 KB | 22 Mar 2010 |
| Graphics/igfxpers.exe | 411.7 KB | 22 Mar 2010 |
| Graphics/igfxpph.dll | 248.3 KB | 15 Mar 2010 |
| Graphics/igfxrara.lrc | 284.7 KB | 15 Mar 2010 |
| Graphics/igfxrchs.lrc | 281.6 KB | 15 Mar 2010 |
| Graphics/igfxrcht.lrc | 281.6 KB | 15 Mar 2010 |
| Graphics/igfxrcsy.lrc | 285.7 KB | 15 Mar 2010 |
| Graphics/igfxrdan.lrc | 285.2 KB | 15 Mar 2010 |
| Graphics/igfxrdeu.lrc | 286.2 KB | 15 Mar 2010 |
| Graphics/igfxrell.lrc | 286.7 KB | 15 Mar 2010 |
| Graphics/igfxrenu.lrc | 285.2 KB | 15 Mar 2010 |
| Graphics/igfxresn.lrc | 286.7 KB | 15 Mar 2010 |
| Graphics/igfxress.dll | 9.0 MB | 15 Mar 2010 |
| Graphics/igfxrfin.lrc | 285.7 KB | 15 Mar 2010 |
| Graphics/igfxrfra.lrc | 286.7 KB | 15 Mar 2010 |
| Graphics/igfxrheb.lrc | 284.7 KB | 15 Mar 2010 |
| Graphics/igfxrhun.lrc | 285.7 KB | 15 Mar 2010 |
| Graphics/igfxrita.lrc | 286.2 KB | 15 Mar 2010 |
| Graphics/igfxrjpn.lrc | 283.1 KB | 15 Mar 2010 |
| Graphics/igfxrkor.lrc | 282.6 KB | 15 Mar 2010 |
| Graphics/igfxrnld.lrc | 285.7 KB | 15 Mar 2010 |
| Graphics/igfxrnor.lrc | 285.7 KB | 15 Mar 2010 |
| Graphics/igfxrplk.lrc | 286.2 KB | 15 Mar 2010 |
| Graphics/igfxrptb.lrc | 285.7 KB | 15 Mar 2010 |
| Graphics/igfxrptg.lrc | 286.2 KB | 15 Mar 2010 |
| Graphics/igfxrrus.lrc | 286.2 KB | 15 Mar 2010 |
| Graphics/igfxrsky.lrc | 286.2 KB | 15 Mar 2010 |
| Graphics/igfxrslv.lrc | 285.7 KB | 15 Mar 2010 |
| Graphics/igfxrsve.lrc | 285.7 KB | 15 Mar 2010 |
| Graphics/igfxrtha.lrc | 285.2 KB | 15 Mar 2010 |
| Graphics/igfxrtrk.lrc | 285.7 KB | 15 Mar 2010 |
| Graphics/igfxsrvc.dll | 61.4 KB | 15 Mar 2010 |
| Graphics/igfxsrvc.exe | 510.0 KB | 22 Mar 2010 |
| Graphics/igfxtray.exe | 166.4 KB | 22 Mar 2010 |
| Graphics/igkrng400.bin | 1.5 MB | 15 Mar 2010 |
| Graphics/igkrng500.bin | 982.2 KB | 15 Mar 2010 |
| Graphics/igkrng575.bin | 870.5 KB | 15 Mar 2010 |
| Graphics/iglhcp32.dll | 143.4 KB | 15 Mar 2010 |
| Graphics/iglhcp64.dll | 187.4 KB | 15 Mar 2010 |
| Graphics/iglhsip32.dll | 208.9 KB | 15 Mar 2010 |
| Graphics/iglhsip64.dll | 205.8 KB | 15 Mar 2010 |
| Graphics/iglhxa64.cpa | 2.0 MB | 15 Mar 2010 |
| Graphics/iglhxa64.vp | 1.1 KB | 15 Mar 2010 |
| Graphics/iglhxc64.vp | 60.2 KB | 15 Mar 2010 |
| Graphics/iglhxg64.vp | 60.3 KB | 15 Mar 2010 |
| Graphics/iglhxo64.vp | 60.0 KB | 15 Mar 2010 |
| Graphics/iglhxs64.vp | 5.2 KB | 15 Mar 2010 |
| Graphics/igxpco64.dll | 90.1 KB | 15 Mar 2010 |
| Graphics/igxpun.exe | 948.8 KB | 22 Mar 2010 |
| Graphics/lang/ar-SA/license.txt | 40.4 KB | 28 May 2009 |
| Graphics/lang/ar-SA/setup.exe.mui | 57.9 KB | 22 Mar 2010 |
| Graphics/lang/cs-CZ/license.txt | 46.4 KB | 28 May 2009 |
| Graphics/lang/cs-CZ/setup.exe.mui | 65.0 KB | 22 Mar 2010 |
| Graphics/lang/da-DK/license.txt | 47.7 KB | 28 May 2009 |
| Graphics/lang/da-DK/setup.exe.mui | 67.1 KB | 22 Mar 2010 |
| Graphics/lang/de-DE/license.txt | 50.7 KB | 28 May 2009 |
| Graphics/lang/de-DE/setup.exe.mui | 70.7 KB | 22 Mar 2010 |
| Graphics/lang/el-GR/license.txt | 51.1 KB | 28 May 2009 |
| Graphics/lang/el-GR/setup.exe.mui | 72.2 KB | 22 Mar 2010 |
| Graphics/lang/en-US/Setup.exe.mui | 41.0 KB | 22 Mar 2010 |
| Graphics/lang/en-US/license.txt | 22.6 KB | 28 May 2009 |
| Graphics/lang/fi-FI/license.txt | 46.9 KB | 28 May 2009 |
| Graphics/lang/fi-FI/setup.exe.mui | 65.5 KB | 22 Mar 2010 |
| Graphics/lang/fr-FR/license.txt | 49.0 KB | 28 May 2009 |
| Graphics/lang/fr-FR/setup.exe.mui | 69.6 KB | 22 Mar 2010 |
| Graphics/lang/he-IL/license.txt | 39.7 KB | 28 May 2009 |
| Graphics/lang/he-IL/setup.exe.mui | 56.3 KB | 22 Mar 2010 |
| Graphics/lang/hu-HU/license.txt | 48.9 KB | 28 May 2009 |
| Graphics/lang/hu-HU/setup.exe.mui | 68.6 KB | 22 Mar 2010 |
| Graphics/lang/it-IT/license.txt | 49.3 KB | 28 May 2009 |
| Graphics/lang/it-IT/setup.exe.mui | 69.1 KB | 22 Mar 2010 |
| Graphics/lang/ja-JP/license.txt | 33.1 KB | 28 May 2009 |
| Graphics/lang/ja-JP/setup.exe.mui | 48.1 KB | 22 Mar 2010 |
| Graphics/lang/ko-KR/license.txt | 35.1 KB | 28 May 2009 |
| Graphics/lang/ko-KR/setup.exe.mui | 49.7 KB | 22 Mar 2010 |
| Graphics/lang/nb-NO/license.txt | 46.6 KB | 28 May 2009 |
| Graphics/lang/nb-NO/setup.exe.mui | 65.5 KB | 22 Mar 2010 |
| Graphics/lang/nl-NL/license.txt | 49.4 KB | 28 May 2009 |
| Graphics/lang/nl-NL/setup.exe.mui | 69.6 KB | 22 Mar 2010 |
| Graphics/lang/pl-PL/license.txt | 50.9 KB | 28 May 2009 |
| Graphics/lang/pl-PL/setup.exe.mui | 70.7 KB | 22 Mar 2010 |
| Graphics/lang/pt-BR/license.txt | 47.0 KB | 28 May 2009 |
| Graphics/lang/pt-BR/setup.exe.mui | 66.6 KB | 22 Mar 2010 |
| Graphics/lang/pt-PT/license.txt | 48.2 KB | 28 May 2009 |
| Graphics/lang/pt-PT/setup.exe.mui | 68.1 KB | 22 Mar 2010 |
| Graphics/lang/ru-RU/license.txt | 50.0 KB | 28 May 2009 |
| Graphics/lang/ru-RU/setup.exe.mui | 68.6 KB | 22 Mar 2010 |
| Graphics/lang/sk-SK/license.txt | 47.1 KB | 28 May 2009 |
| Graphics/lang/sk-SK/setup.exe.mui | 66.6 KB | 22 Mar 2010 |
| Graphics/lang/sl-SI/license.txt | 45.0 KB | 28 May 2009 |
| Graphics/lang/sl-SI/setup.exe.mui | 64.0 KB | 22 Mar 2010 |
| Graphics/lang/sv-SE/license.txt | 47.3 KB | 28 May 2009 |
| Graphics/lang/sv-SE/setup.exe.mui | 66.0 KB | 22 Mar 2010 |
| Graphics/lang/th-TH/license.txt | 45.8 KB | 28 May 2009 |
| Graphics/lang/th-TH/setup.exe.mui | 64.0 KB | 22 Mar 2010 |
| Graphics/lang/tr-TR/license.txt | 48.0 KB | 28 May 2009 |
| Graphics/lang/tr-TR/setup.exe.mui | 67.1 KB | 22 Mar 2010 |
| Graphics/lang/zh-CN/license.txt | 30.4 KB | 28 May 2009 |
| Graphics/lang/zh-CN/setup.exe.mui | 43.0 KB | 22 Mar 2010 |
| Graphics/lang/zh-TW/license.txt | 30.6 KB | 28 May 2009 |
| Graphics/lang/zh-TW/setup.exe.mui | 43.5 KB | 22 Mar 2010 |
| Graphics/oemdspif.dll | 59.4 KB | 15 Mar 2010 |
| HDMI/HdmiCoin.dll | 6.1 KB | 14 Dec 2009 |
| HDMI/INTCHDMI.CAT | 10.6 KB | 17 Dec 2009 |
| HDMI/IntcHdmi.inf | 31.1 KB | 14 Dec 2009 |
| HDMI/IntcHdmi.sys | 144.9 KB | 14 Dec 2009 |
| IIPS/Impcd.cat | 8.0 KB | 15 Feb 2010 |
| IIPS/Impcd.inf | 3.5 KB | 10 Feb 2010 |
| IIPS/x32/Impcd.sys | 132.4 KB | 10 Feb 2010 |
| IIPS/x64/Impcd.sys | 158.7 KB | 10 Feb 2010 |
| Intel Control Center/SetupICC.exe | 813.6 KB | 22 Mar 2010 |
| Lang/ar-SA/license.txt | 40.4 KB | 28 May 2009 |
| Lang/ar-SA/setup.exe.mui | 57.9 KB | 22 Mar 2010 |
| Lang/cs-CZ/license.txt | 46.4 KB | 28 May 2009 |
| Lang/cs-CZ/setup.exe.mui | 65.0 KB | 22 Mar 2010 |
| Lang/da-DK/license.txt | 47.7 KB | 28 May 2009 |
| Lang/da-DK/setup.exe.mui | 67.1 KB | 22 Mar 2010 |
| Lang/de-DE/license.txt | 50.7 KB | 28 May 2009 |
| Lang/de-DE/setup.exe.mui | 70.7 KB | 22 Mar 2010 |
| Lang/el-GR/license.txt | 51.1 KB | 28 May 2009 |
| Lang/el-GR/setup.exe.mui | 72.2 KB | 22 Mar 2010 |
| Lang/en-US/Setup.exe.mui | 41.0 KB | 22 Mar 2010 |
| Lang/en-US/license.txt | 22.6 KB | 28 May 2009 |
| Lang/fi-FI/license.txt | 46.9 KB | 28 May 2009 |
| Lang/fi-FI/setup.exe.mui | 65.5 KB | 22 Mar 2010 |
| Lang/fr-FR/license.txt | 49.0 KB | 28 May 2009 |
| Lang/fr-FR/setup.exe.mui | 69.6 KB | 22 Mar 2010 |
| Lang/he-IL/license.txt | 39.7 KB | 28 May 2009 |
| Lang/he-IL/setup.exe.mui | 56.3 KB | 22 Mar 2010 |
| Lang/hu-HU/license.txt | 48.9 KB | 28 May 2009 |
| Lang/hu-HU/setup.exe.mui | 68.6 KB | 22 Mar 2010 |
| Lang/it-IT/license.txt | 49.3 KB | 28 May 2009 |
| Lang/it-IT/setup.exe.mui | 69.1 KB | 22 Mar 2010 |
| Lang/ja-JP/license.txt | 33.1 KB | 28 May 2009 |
| Lang/ja-JP/setup.exe.mui | 48.1 KB | 22 Mar 2010 |
| Lang/ko-KR/license.txt | 35.1 KB | 28 May 2009 |
| Lang/ko-KR/setup.exe.mui | 49.7 KB | 22 Mar 2010 |
| Lang/nb-NO/license.txt | 46.6 KB | 28 May 2009 |
| Lang/nb-NO/setup.exe.mui | 65.5 KB | 22 Mar 2010 |
| Lang/nl-NL/license.txt | 49.4 KB | 28 May 2009 |
| Lang/nl-NL/setup.exe.mui | 69.6 KB | 22 Mar 2010 |
| Lang/pl-PL/license.txt | 50.9 KB | 28 May 2009 |
| Lang/pl-PL/setup.exe.mui | 70.7 KB | 22 Mar 2010 |
| Lang/pt-BR/license.txt | 47.0 KB | 28 May 2009 |
| Lang/pt-BR/setup.exe.mui | 66.6 KB | 22 Mar 2010 |
| Lang/pt-PT/license.txt | 48.2 KB | 28 May 2009 |
| Lang/pt-PT/setup.exe.mui | 68.1 KB | 22 Mar 2010 |
| Lang/ru-RU/license.txt | 50.0 KB | 28 May 2009 |
| Lang/ru-RU/setup.exe.mui | 68.6 KB | 22 Mar 2010 |
| Lang/sk-SK/license.txt | 47.1 KB | 28 May 2009 |
| Lang/sk-SK/setup.exe.mui | 66.6 KB | 22 Mar 2010 |
| Lang/sl-SI/license.txt | 45.0 KB | 28 May 2009 |
| Lang/sl-SI/setup.exe.mui | 64.0 KB | 22 Mar 2010 |
| Lang/sv-SE/license.txt | 47.3 KB | 28 May 2009 |
| Lang/sv-SE/setup.exe.mui | 66.0 KB | 22 Mar 2010 |
| Lang/th-TH/license.txt | 45.8 KB | 28 May 2009 |
| Lang/th-TH/setup.exe.mui | 64.0 KB | 22 Mar 2010 |
| Lang/tr-TR/license.txt | 48.0 KB | 28 May 2009 |
| Lang/tr-TR/setup.exe.mui | 67.1 KB | 22 Mar 2010 |
| Lang/zh-CN/license.txt | 30.4 KB | 28 May 2009 |
| Lang/zh-CN/setup.exe.mui | 43.0 KB | 22 Mar 2010 |
| Lang/zh-TW/license.txt | 30.6 KB | 28 May 2009 |
| Lang/zh-TW/setup.exe.mui | 43.5 KB | 22 Mar 2010 |
| MediaSDK/libmfxhw32-i1.dll | 14.2 MB | 10 Sep 2009 |
| MediaSDK/libmfxhw64-i1.dll | 18.4 MB | 10 Sep 2009 |
| MediaSDK/support.txt | 160 bytes | 10 Sep 2009 |
| Setup.exe | 948.8 KB | 22 Mar 2010 |
| Setup.if2 | 9.1 KB | 13 Nov 2009 |
| Setup2.if2 | 2.3 KB | 10 Nov 2009 |
| Version.txt | 815 bytes | 7 Jun 2010 |
| autorun.inf | 25 bytes | 30 Dec 2008 |
| ibxHDMI/IntcDAuC.dll | 14.8 KB | 8 Jan 2010 |
| ibxHDMI/IntcDAud.cat | 10.4 KB | 30 Jan 2010 |
| ibxHDMI/IntcDAud.inf | 549.2 KB | 8 Jan 2010 |
| ibxHDMI/IntcDAud.sys | 271.9 KB | 8 Jan 2010 |
| installation_readme.txt | 65.3 KB | 22 Mar 2010 |
| readme.txt | 5.1 KB | 22 Mar 2010 |
| x64/DIFxAPI.dll | 525.8 KB | 2 Nov 2006 |
| x64/Drv64.exe | 152.6 KB | 22 Mar 2010 |
How to Update Studio Laptop 1558 Device Drivers Quickly & Easily
Step 1 - Download Your Driver
To get the Studio Laptop 1558 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 Dell Studio Laptop 1558 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 Dell 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 Dell website. Most major device manufacturers update their drivers regularly.
Step 2 - Install Your Driver
Once you have downloaded your new driver, you'll need to install it. In Windows, use a built-in utility called Device Manager, which allows you to see all of the devices recognized by your system, and the drivers associated with them.
How to Open Device Manager
In Windows 11, Windows 10 & Windows 8.1, right-click the Start menu and select Device Manager
In Windows 8, swipe up from the bottom, or right-click anywhere on the desktop and choose "All Apps" -> swipe or scroll right and choose "Control Panel" (under Windows System section) -> Hardware and Sound -> Device Manager
In Windows 7, click Start -> Control Panel -> Hardware and Sound -> Device Manager
In Windows Vista, click Start -> Control Panel -> System and Maintenance -> Device Manager
In Windows XP, click Start -> Control Panel -> Performance and Maintenance -> System -> Hardware tab -> Device Manager button
How to Install a driver from Device Manager
Locate the device and model that is having the issue and double-click on it to open the Properties dialog box.
Select the Driver tab.
Click the Update Driver button and follow the instructions.
In most cases, you will need to reboot your computer in order 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.