Acer Aspire S7-391 Service Manual page 31

Supported Display Resolutions
1024×768, 60 Hz
1152×864, 60 Hz
1280×768, 60 Hz
1280×800, 60 Hz
1280×960, 60 Hz
1280×1024, 60 Hz
Maximum Resolution HDMI: 1920x1080: 60Hz
Audio Codec
Item
Controller
Features
Audio Interface
Item
Controller
Audio onboard
Audio channel
Resolution
Compatibility
Sampling rate
Internal microphone
Internal speaker/quantity
Hardware Specifications and Configurations
Specification
1360×768, 60 Hz
1366×768, 60 Hz
1400×1050, 60 Hz
1440×900, 60 Hz
1600×900, 60 Hz
1680×1050, 60 Hz
Realtek ALC271X-VB6
98 dB Signal-to-Noise Ratio (A-weighting) for DAC output

90 dB Signal-to-Noise Ratio (A-weighting) for ADC input

Internal Digital Power support: 3.3V digital core power;

1.5–3.3V digital IO power for HDA link; 3.0–5.5V analog
power; 4.5–5.5V power stage voltage
Acoustic Echo Cancellation (AEC), Noise Suppression (NS),

and Beam Forming (BF) technologies for voice application
48-pin green QFN package

Realtek ALC271X-VB6
Yes
Stereo
18 bit stereo full duplex
High Definition Audio Specification
1 Hz resolution VSR (Variable Sampling Rate)
Yes
Yes, two speakers
Specification
Specification
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