NCR RealPOS 70, Руководство пользователя

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1-16 Chapter 1: Product Overview
The ICH4 supports up to six channels of PCM audio output (full AC3
decode). Six ‐ channel audio consists of Front Left, Front Right, Back
Left, Back Right, Center, and Subwoofer, for a complete surround ‐
sound effect. ICH4 has expanded support for three audio codecs on the
AC ‐ link. The 7402 motherboard provides a single codec for Left and
Right stereo sound. Surround sound is not supported.
An amplifier integrated on the motherboard allows direct drive of
stereo speakers, up to 3 Watts/channel.
Intel provides Windows and Linux drivers for the integrated audio.
Under DOS there is SoundBlaster compatibility.
Audio Outputs:
•
A triple stack audio connector on the rear I/O with Line in (top),
Speaker out (middle), and Mic in (bottom) on 3.5mm stereo jacks.
•
An internal 14 pin header as defined by Embedded ATX,
implementing Line out (amplified), Speaker out, and Mic in.
Plugging a cable into the Speaker out or Mic in ports on the rear I/O
disables that functionality on the internal header.
A piezo transducer on the motherboard provides basic PC beep
functionality under DOS, and also for other OS when there are no
speakers connected. The PC beep signal is connected to the audio codec
to allow PC beep sounds to play through the speakers when these are
present.
Fan Connectors
The motherboard has three fan connectors. One is reserved for the CPU
fan. The power supply fan speed output is connected to a second fan
connector, which is used to monitor power supply fan health.
All fan connectors are +12Vand are intended for fans with 300mA
typical current draw.