This article describes the hardware requirements for multiple-display support in Windows 98.

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All of the video adapters that are used in a computer with multiple-display support must be Peripheral Component Interconnect (PCI) or Accelerated Graphics Port (AGP) devices that use multiple-display-enabled video adapter drivers that are included with Windows 98. Industry Standard Architecture (ISA) and Extended Industry Standard Architecture (EISA) video adapters are not supported.

The video adapters that are installed in your computer do not have to be identical. Each video adapter and monitor combination is separately enumerated by Windows; you can configure each combination to use different screen resolutions and color depths. For example, you can set the primary adapter to 1024 X 768 pixels with 256 colors and the secondary adapter to 800 X 600 pixels with 32,000 colors.

For additional information about how to enable multiple-display support, click the article number below to view the article in the Microsoft Knowledge Base:

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Unsupported Video Adapter Chip Sets

You cannot use video adapters with the following chip sets as multiple-display support devices:

•	Permedia (this does not include the Permedia NT and Permedia-2 chip sets)

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Supported Video Adapter Chip Sets

You can use any combination of the following supported PCI-based video adapters with multiple monitors. Only video adapters that are based on the following chip sets work as primary and secondary video adapters.

Note that only the PCI adapters that are listed below are supported as the primary adapter. However, other PCI adapters may work even though they are not supported, but you must use the specified driver.

The following drivers are supported by Microsoft and are included on the Windows 98 CD-ROM:

•	ATI 3D Xpression+ PC2TV
•	ATI 3D Xpression+
•	ATI 3D Xpression
•	ATI All-In-Wonder Pro
•	ATI All-In-Wonder
•	ATI Graphics Pro Turbo PCI
•	ATI Graphics Xpression
•	ATI Mach 64 GX (GX, GXD, VT) Atim64.drv
•	ATI Rage I, II, & II+ Ati_m64.drv
•	ATI Rage Pro (AGP & PCI) Atir3.drv
•	ATI WinTurbo
•	ATI Xpert@Play, 4 & 8 MB
•	ATI Xpert@Work, 4 & 8 MB
•	California Graphics V2/DX
•	Cirrus 5436CIRRUSMM.drv
•	Cirrus 5446CIRRUSMM.drv
•	Cirrus Alpine
•	Compaq Armada S3mm.drv
•	Diamond Stealth 3D 2000 Pro
•	Diamond Stealth 3D 2000
•	Diamond Stealth 3D 3000
•	Diamond Stealth 64 Video 2001
•	ET6000ET6000.drv
•	Hercules Dynamite 128/Video
•	Hercules Terminator 64/Video
•	Jaton Video - 57P
•	Miro Crystal VR4000
•	Miro TwinHead 22SD
•	Number Nine 9FX Reality 332 (S3 Virge)
•	Number Nine 9FX Reality 332
•	Number Nine 9FX Reality 334 (S3 Virge GX/2)
•	Number Nine 9FX Reality 772 (S3 Virge VX)
•	S3 765 (Trio64V+) S3mm.drv (NOTE: Only certain updates work. These are the 40, 42, 43, 44, 52, 53, and 54 updates. If the adapter uses one of these updates, Windows 98 will recognize the video adapter as a Trio 64V+, provided the Microsoft driver is used. If the adapter does not use one of these updates, it is recognized as a Trio 32/64. Some OEM drivers can use any update. Be sure to note carefully which Microsoft driver Windows 98 selects when you use this adapter.)
•	S3 Trio64V2(DX/GX)S3MM.drv
•	S3 ViRGE S3V.drv
•	STB Lightspeed 128
•	STB MVP 64
•	STB MVP/64 3D
•	STB MVP/64
•	STB Nitro 3D
•	STB Nitro 64V
•	STB Powergraph 3D
•	STB PowerGraph 64V+
•	STB Velocity 3D
•	STB WorkStation (2 & 4 output)
•	Trident 9685/9680/9682/9385/9382/9385 Trid_pci.drv
•	Videologic GraphicsStar 410
•	ViRGE (325)
•	ViRGE DX (385)
•	ViRGE GX (385))
•	ViRGE VX (988)

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