PC System Design Guide Audio
Older sound cards had no common standard color codes until after PC99. 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. PC 99 introduced a color code for the various standard types of plugs and connectors used on PCs.
The color code for audio plugs follow:
| Orange TRS 3.5 mm | Output, subwoofer |
| Blue TRS 3.5 mm | Input, line level |
| Pink TRS† 3.5 mm | microphone input |
| Lime TRS 3.5 mm | Output, front channels |
| Brown TRS 3.5 mm | Output, 'Right-to-left speaker' |
| Gold TRS 3.5 mm | MIDI/game |
† Though the input is often mono, the actual connector is usually still a 3-conductor TRS phone minijack. Many mono computer microphones have 3-conductor TRS plugs.
Read more about this topic: Audio And Video Interfaces And Connectors, Interfaces
Famous quotes containing the words guide, system and/or design:
“Every individual ought to know at least one poet from cover to cover: if not as a guide through the world, then as a yardstick for the language.”
—Joseph Brodsky (b. 1940)
“New York is more now than the sum of its people and buildings. It makes sense only as a mechanical intelligence, a transporter system for the daily absorbing and nightly redeploying of the human multitudes whose services it requires.”
—Peter Conrad (b. 1948)
“Westerners inherit
A design for living
Deeper into matter—
Not without due patter
Of a great misgiving.”
—Robert Frost (1874–1963)