HP ProBook 4440s - Page 27

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
HP 90W Smart AC Adapter
(discrete configurations) -
4540s only
Dimensions 5.00 x 1.97 x 1.1 in (12.7 x 5.0 x 2.9 cm)
Weight 0.82 lb (370 g)
Input 100 to 240 VAC
Input Efficiency 87% min at 115 VAC
Input frequency range 47 to 63 Hz
Input AC current 1.5 A at 90 VAC, 0.75 A at 180 VAC PFC Version
2.4 A at 90 VAC, 1.2 A at 180 VAC NON PFC Version
Output Output power 90W
DC output 19.0V
Hold-up time 5 msec at 115 VAC input
Output current limit <11A, Over voltage protection- 29V max
automatic shutdown
Connector 3 pin/grounded, mates with interchangeable cords
Environmental Design Operating
temperature
32° to 104° F (0° to 40° C)
QuickSpecs
HP ProBook 4440s/1s Notebook PC
HP ProBook 4540s Notebook PC
Technical Specifications
DA - 14306 North America — Version 7 — April 25, 2013 Page 27