Energy Consumption
115 VAC 230 VAC 100 VAC
Normal Operation
38.6 W 38.6 W 38.6 W
Sleep (Energy Star low
power mode)
3.7 W 3.5 W 3.7 W
Off
1.45 W 1.45 W 1.45 W
Heat Dissipation*
115 VAC 230 VAC 100 VAC
Normal Operation
131 BTU/hr 131 BTU/hr 131 BTU/hr
Sleep
12.6 BTU/hr 11.9 BTU/hr 12.6 BTU/hr
Off
5 BTU/hr 5 BTU/hr 5 BTU/hr
*NOTE
: Heat dissipation is calculated based on the measured watts, assuming
the service level is attained for one hour.
This product is in compliance with US executive order 13221, WOL (wake on
LAN) disabled.
Declared Noise Emissions
(in accordance with
ISO 7779 and ISO 9296)
Sound Power
(LWAd, bels)
Sound Pressure
(LpAm, decibels)
Idle
2.8
25.6
Fixed Disk (random
writes)
3.5
33.8
Batteries
This product complies with ISO standards:
EU Directive 91/ 157/ EEC
EU Directive 93/ 86/ EEC
EU Directive 98/ 101/ EEC
Batteries used in the product do not contain:
Mercury greater than 5ppm by weight
Cadmium greater than 10ppm by weight
Lead greater than 4000 ppm by weight.
Battery type and chemistry used in the product:
Primary battery
8-cell high-capacity rechargeable Lithium-Ion battery
Real Time Clock battery
CR2025 (coin cell), Lithium
Additional Information
This product is in compliance with the Restrictions of Hazardous Substances
(RoHS) directive – 2002/95/EC.
This HP product is designed to comply with the Waste Electrical and Electronic
Equipment (WEEE) Directive – 2002/96/EC.
Keyboard complies with ISO standard: ISO 9995, EN 29241-4, and ISO/IEC
15412
QuickSpecs
HP Compaq nx9420 Notebook PC
Technical Specifications
DA - 12427 North America — Version 22 — October 5, 2007
Page 39