Editing Windows 9x (section)

====CPU and bus technologies====
Windows 9x has no native support for [[hyper-threading]], [[Data Execution Prevention]], [[symmetric multiprocessing]], [[Advanced Programmable Interrupt Controller|APIC]], or [[Multi-core (computing)|multi-core]] processors.

Windows 9x has no native support for [[Serial ATA|SATA]] host bus adapters (and neither do Windows 2000 nor Windows XP for that matter), or [[USB]] drives (except for Windows Me). There are, however, many [[SATA#SATA revision 1.0 (1.5 Gbit/s, 150 MB/s, Serial ATA-150)|SATA-I]] controllers for which Windows 98/Me drivers exist (and indeed Windows 2000 and Windows XP also provided SATA support via third-party drivers as well), and USB mass storage support has been added to Windows 95 OSR2 and Windows 98 through third party drivers.<ref>{{Cite web|url=https://msfn.org/board/topic/43605-maximus-decim-native-usb-drivers/|title=Maximus-Decim Native USB Drivers|date=April 11, 2005|website=MSFN|access-date=April 20, 2019}}</ref><ref>{{Cite web|url=http://www.msfn.org/board/topic/172402-xusbsupp-extended-usb-supplement-for-windows-95-osr2/|title=XUSBSUPP - eXtended USB Supplement for Windows 95 OSR2|date=August 3, 2014|website=MSFN|archive-url=https://web.archive.org/web/20141024124119/http://www.msfn.org/board/topic/172402-xusbsupp-extended-usb-supplement-for-windows-95-osr2/|archive-date=October 24, 2014|access-date=April 20, 2019}}</ref> Hardware driver support for Windows 98/Me began to decline in 2005, most notably with motherboard [[chipset]]s and [[video card]]s.

Early versions of Windows 95 had no support for [[USB]] or [[Accelerated Graphics Port|AGP]] acceleration (including lack of [[Infrared]] support for Windows 95 RTM). Windows 95 had preliminary support for [[ATAPI]] CD-ROMs, albeit with buggy ATAPI implementation. Windows 95 prior to OSR2 also had buggy support for processors implementing [[MMX (instruction set)|MMX]] as well as processors based on the [[P6 (microarchitecture)|P6 microarchitecture]].