System Unit
Dimensions (HxWxD)
HP ProBook 4520s:
1.09 in (at front) x 14.64 in x 9.83 in
27.7 mm (at front) x 371.8 mm x 249.6 mm
HP ProBook 4720s:
1.11 in (at front) x 16.17 in x 10.49 in
28.2 mm (at front) x 410.6 mm x 266.4 mm
Weight
HP ProBook 4520s:
Starting at 5.26 lb (2.39 kg) without optical drive
or 5.5 lb (2.5 kg) with optical drive
HP ProBook 4720s:
Starting at 6.51 lb (2.97 kg) without optical drive
or 6.8 lb (3.1 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
MIC
Yes
QuickSpecs
HP ProBook 4520s Notebook PC HP ProBook
4720s Notebook PC
Technical Specifications
DA - 13569 Worldwide QuickSpecs — Version 2 — 3.12.2010
Page 16
