System Unit
Dimensions
(HxWxD)
HP ProBook 4320s:
1.07 in (at front) x 12.75 in x 8.98 in
27.0 mm (at front) x 324 mm x 228.0 mm
HP ProBook 4420s:
1.07 in (at front) x 13.23 in x 9.15 in
27.0 mm (at front) x 336 mm x 232.4 mm
Weight
HP ProBook 4320s:
Starting at 4.45 lb (2.02 kg) without optical drive
or 4.74 lb (2.15 kg) with optical drive
HP ProBook 4420s:
Starting at 4.71 lb (2.14 kg) without optical drive
or 5.0 lb (2.27 kg) with optical drive
NOTE:
Height varies depending upon where on the notebook the measurement is made. Weight varies by
configuration and components. Weight includes 6-cell battery, no optical drive. Weight varies by
configuration and components.
Stand-Alone Power
Requirements
(AC Power)
Nominal Operating Voltage
18.5 V
Average Operating Power
with integrated graphics: 18 W
with discrete graphics: 21 W
Max Operating Power
< 90 W or < 65W
Temperature
Operating
32° to 95° F (0° to 35° C) (not writing optical)
41° to 95° F (5° to 35° C) (writing optical)
Non-operating
-4° to 140° F (-20° to 60° C)
Relative Humidity
Operating
10% to 90%, non-condensing
Non-operating
5% to 95%, 101.6° F (38.7° C) maximum wet bulb
temperature
Shock
Operating
125 G, 2 ms, half-sine
Non-operating
200 G, 2 ms, half-sine
Random Vibration
Operating
0.75 grms
Non-operating
1.50 grms
Altitude
(unpressurized)
Operating
-50 to 10,000 ft (-15.24 to 3,048 m)
Non-operating
-50 to 40,000 ft (-15.24 to 12,192 m)
Industry Standard
Certifications
UL
Yes
CSA
Yes
FCC Compliance
Yes
ENERGY STAR®
Select models
*
EPEAT
Registered TBD in United States
**
ICES
Yes
Australia / NZ A-Tick
Compliance
Yes
CCC
Yes
Japan VCCI Compliance
Yes
QuickSpecs
HP ProBook 4320s Notebook PC
HP ProBook 4420s Notebook PC
Technical Specifications
DA - 13568 North America — Version 19 — September 29, 2011
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