PC System Design Guide - wikipedia PC System Design Guide This article possibly contains original research. Please improve it by verifying the claims made and adding inline citations. Statements consisting only of original research should be removed. ( February 2016 ) The PC System Design Guide ( also known as the PC 97, PC 98, PC 99, or PC 2001 specification ) is a series of hardware design requirements and recommendations for IBM PC compatible personal computers, compiled by Microsoft and Intel Corporation during 1997 -- 2001. They were aimed at helping manufacturers provide hardware that made the best use of the capabilities of the Microsoft Windows operating system, and to simplify setup and use of such computers. Every part of a standard computer and the most common kinds of peripheral devices are defined with specific requirements. Systems and devices that meet the specification should be automatically recognized and configured by the operating system. Contents 1 Versions 1.1 PC 97 1.2 PC 98 1.3 PC 99 1.4 PC 2001 2 Color - coding scheme for connectors and ports 3 See also 4 References 5 External links Versions Four versions of the PC System Design Guide were released. Within each version, a distinction was made between the requirements of a Consumer PC, an Office PC and an Entertainment PC. Version Date PC 97 February 9, 1998 PC 98 December 31, 1998 PC 99 July 14, 1999 PC 2001 November 2, 2000 PC 97 Initial version. Introduced color code for PS / 2 keyboard ( purple ) and mouse ( green ) connectors PC 98 Aimed at systems to be used with Windows 98 or Windows 2000. Required : 200 MHz Pentium processor with MMX technology ( or equivalent performance ) 256 KB L2 cache 32 MB RAM ( recommended : 64 MB of 66 MHz DRAM ) ACPI 1.0 ( including power button behavior ) Fast BIOS power - up ( limited RAM test, no floppy test, minimal startup display, etc. ) BIOS Y2K compliance PXE preboot environment It was published as ISBN 1 - 57231 - 716 - 7. PC 99 Required : 300 MHz CPU 64 MB RAM USB Comprehensive color - coding scheme for ports and connectors ( see below ) Strongly discouraged : Non plug - and - play hardware ISA slots It was published as ISBN 0 - 7356 - 0518 - 1. PC 2001 Final version. First to require IO - APICs to be enabled on all desktop systems. Places a greatly increased emphasis on legacy - reduced and legacy - free systems. Some `` legacy '' items such as ISA expansion slots and device dependence on MS - DOS are forbidden entirely, while others are merely strongly discouraged. Color - coding scheme for connectors and ports Perhaps the most end - user visible and lasting impact of PC 99 was that it introduced a color code for the various standard types of plugs and connectors used on PCs. As many of the connectors look very similar, particularly to a novice PC user, this made it far easier for people to connect peripherals to the correct ports on a PC. This color code was gradually adopted by almost all PC and motherboard manufacturers. Some of the color codes have also been widely adopted by peripheral manufacturers. Color Function Connector on PC Mouse and keyboard Green PS / 2 mouse / pointing device 6 - pin mini-DIN female Purple PS / 2 keyboard 6 - pin mini-DIN female Gold Game port / MIDI 15 - pin D female General input / output White USB 1 low speed and full speed USB Type A receptacle Black USB 2.0 high speed USB Type A receptacle Sky blue USB 3.0 SuperSpeed USB Type A SuperSpeed receptacle Yellow USB 3.0 SuperSpeed Always On even if the PC is turned off USB Type A SuperSpeed receptacle Red High - power USB ( more than 500 mA current available ) USB Type A receptacle Grey IEEE 1394 ( FireWire ) 6 - pin FireWire 400 or 9 - pin FireWire 800 Burgundy Parallel port 25 - pin D female Teal or turquoise Serial port 9 - pin D male Video Blue Analog monitor 15 - pin VGA female White Digital monitor DVI female Yellow S - Video 4 - pin mini-DIN Yellow Composite video RCA jack Black Digital audio / video HDMI or DisplayPort female Audio Pink Analog microphone audio input ( mono or stereo ) 3.5 mm TRS Light blue Analog line level audio input 3.5 mm TRS Lime green Analog line level audio output, front stereo ( speakers or headphones ) 3.5 mm TRS Black Analog line level audio output, rear stereo ( surround speakers ) 3.5 mm TRS Orange Analog line level audio output, center and subwoofer ( surround speakers ) 3.5 mm TRS Silver Analog line level audio output, side stereo ( surround speakers ) 3.5 mm TRS Orange Digital audio output ( coaxial S / PDIF ) RCA connector Black Digital audio output ( optical S / PDIF ) TOSLINK See also Legacy - free PC Multimedia PC Sound card References Jump up ^ Robert Bruce Thompson, Barbara Fritchman Thompson. `` PC Hardware in a Nutshell '' ( 3rd ed. ). O'Reilly & Associates, Inc. p. 1.1 PCs Defined. ISBN 0 - 596 - 00513 - X. Archived from the original on July 11, 2011. Retrieved January 4, 2011. CS1 maint : Uses authors parameter ( link ) Jump up ^ PC 99 System Design Guide, Intel Corporation and Microsoft Corporation, 14 July 1999. Chapter 3 : PC 99 basic requirements ( PC 99 System Design Guide ( Self - extracting. exe archive ). Requirement 3.18. 3 : Systems use a color - coding scheme for connectors and ports. Accessed 2009 - 02 - 05 External links Legacy PC Design Guides -- Microsoft Download Center PDF versions : PC 97 System Design Guide PC 98 System Design Guide PC 99 System Design Guide PC 2001 System Design Guide Audio and video interfaces and connectors Audio only Analog Interface : PC System Design Guide Connectors : TRS 3.5 mm Interface : Balanced audio Connectors : TRS 6.53 mm XLR Digital Interface : S / PDIF Connectors : RCA jack ( coaxial ) TOSLINK ( optical ) BNC Interface : AES3 ( AES / EBU ) Connectors : RCA jack XLR TOSLINK ( optical ) BNC Video only Analog Interface : VGA Connectors : DB - 15 DVI - A Interface : Composite Connectors : RCA jack yellow Interface : S - Video Connectors : Mini-DIN 4 Pin Interface : Component Connectors : RCA jacks × 3 Interface : Composite S - Video, and Component Connectors : VIVO using Mini-DIN 9 Pin Digital and analog Interface : DVI Connectors : DVI - I / DVI - D Video and audio Digital Interface : HDMI Connectors : HDMI connector Interface : DisplayPort Connectors : DisplayPort connector Interface : HDBaseT Connectors : 8P8C connector Retrieved from `` https://en.wikipedia.org/w/index.php?title=PC_System_Design_Guide&oldid=810613418 '' Categories : Color codes Standards IBM PC compatibles Hidden categories : CS1 maint : Uses authors parameter Articles that may contain original research from February 2016 All articles that may contain original research Talk Contents About Wikipedia Català Deutsch Español Français Italiano Magyar Norsk Русский Edit links This page was last edited on 16 November 2017, at 10 : 22. 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Question: what color is the line in jack on a computer
Answer: Light blue