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1. Check latest software/driver release for updates on supported security features.
2. Maximum output power may vary by country according to local regulations.
3. Receiver sensitivity is measured at a packet error rate of 8% for 802.11b (CKK modulation) and a packet
error rate of 10% for 802.11a/g (OFDM modulation).
AUDIO/MULTIMEDIA
Hardware
Implementation
IDT 92HD87 High Definition CODEC
Function Key Volume
Controls
Volume up, volume down, and mute
Full Duplex
Yes
Microphone In
Stereo
Headphone/Line Out
Stereo
Integrated Microphone
Yes, dual digital microphone array when equipped with optional webcam
Audio Output Quality
Frequency Response
20 Hz - 20 kHz
Signal to Noise Ratio
>85 dB
Total Harmonic Distortion
0.01%
Noise Floor
-110 dB
Play/Record Sampling
Rate
(s)
8 kHz - 48kHz
DAC
16, 20 or 24-bit
ADC
16 or 20-bit
Internal Stereo Speaker
Power Rating
2 Watts
Impedance
4 ohms
POWER
QuickSpecs
HP ProBook 4440s/1s Notebook PC
HP ProBook 4540s Notebook PC
HP ProBook 4740s Notebook PC
Technical Specifications
DA - 14306 Worldwide — Version 7 — April 25, 2013
Page 30