HP Armada 7300 Reference Manual page 167

Rated Voltage
Rated Current
Rated Frequency Range
NOTE: This product is designed for IT power systems in Norway with
phase-to-phase voltage not exceeding 240Vrms.
Height
Width
Depth
D-2 Specifications
AC Adapter Power Requirements
Computer Dimensions
U.S.
1.54 in
12.0 in
9.27 in
100–240 Volts AC
1.0 Amp
50 to 60 Hz
Metric
3.91 cm
30.48 cm
23.55 cm