Acer 4553G manual Audio Interface Specification, Keyboard Controller Specification

Audio Interface

Item				Specification
Codec Controller	Realtek ALC271X high definition audio codec with embedded class-D speaker
	amplifier
Audio onboard or	•	Onboard
optional
Mono or Stereo	•	Stereo
Resolution	•	98dB Signal-to-Noise Ratio (A-weighting) for DAC output
	• 90dB Signal-to-Noise Ratio (A-weighting) for ADC input Internal Digital
Compatibility	•	Headphone-out
	• S/PDIF, Line-In and Microphone-In.
	• 2 stereo ADCs support 16/20/24-bit PCM format recording simultaneously.
Sampling Rate	•	All DACs supports 16/20/24-bit, 44.1k/48k/96k/192kHz sample rate.
	• Two independent S/PDIF-OUT converters support 16/20/24-bit, 44.1k/48k/
		88.2k/96k/192kHz sample rate. One for normal S/PDIF output, the other one
		output an independent digital stream to HDMI transmitter.
Internal	•	Digital MICRO PHONE ZK2(HFM-M101-006-L19-G)
Microphone	•	Digital MICRO PHONE ZK2(A-OA2408FM-018)
Internal Speakers	•	Two Med-High Speakers (1W/4Ù)
Keyboard Controller
Item				Specification
Controller				Winbond NPCE781L
Total number of keypads				99-/100-/103-key keyboard
Windows logo key				Yes
Hotkeys				See “Hot Keys” on page 15.
Battery
Item				Specification
				6 Cell
Vendor & model name			SANYO/SONY/PANASONIC/SAMSUNG/SIMPLO AS2009A
Battery Type			Li-ion
Pack capacity			4400 mAh
Normal Voltage			2.2 Ah
Package configuration			3S2P
RTC Battery
Item				Specification
Part name				CR2032
Pack capacity				220 mAh
Normal voltage				3V

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