HP CQ57-410US, CQ57-439WM manual Specifications, Input power, DC plug of external HP power supply

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9 Specifications

●Input power

●Operating environment

Input power

The power information in this section may be helpful if you plan to travel internationally with the computer.

The computer operates on DC power, which can be supplied by an AC or a DC power source. The AC power source must be rated at 100–240 V, 50–60 Hz. Although the computer can be powered from a standalone DC power source, it should be powered only with an AC adapter or a DC power source supplied and approved by HP for use with this computer.

The computer can operate on DC power within the following specifications.

Input power	Rating

Operating voltage and current	18.5 V dc @ 3.5 A - 65 W or 19.0 V dc @ 4.74 A - 90 W

DC plug of external HP power supply

NOTE: This product is designed for IT power systems in Norway with phase-to-phase voltage not exceeding 240 V rms.

NOTE: The computer operating voltage and current can be found on the system regulatory label.

44 Chapter 9 Specifications

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Contents Getting Started Product notice Software termsSafety warning notice Iv Safety warning notice Table of contents Contacting customer support Labels Welcome Finding informationSelect Start All Programs HP Help Finding informationResource Support HP DocumentationFinding information TouchPad Getting to know your computerTop Component DescriptionLights Buttons Keys Esc keyRight side Left side Hdmi port select models onlyDisplay Communication and Chat CyberLink YouCamBottom HP QuickWeb select models only Starting HP QuickWebStarting HP QuickWeb KeyNetworking Using an Internet service provider ISP Connecting to a wireless networkConnecting to an existing Wlan Setting up a new Wlan networkConfiguring a wireless router Keyboard and pointing devices Using the keyboardUsing the action keys Icon Action DescriptionUsing the keyboard Using the TouchPad Using pointing devicesSetting pointing device preferences Turning the TouchPad off and on Selecting Scrolling Rotating select models only Maintenance Inserting or removing the batteryPage Replacing or upgrading the hard drive Removing the hard driveInstalling a hard drive Page Adding or replacing memory modules Page Page Page Page Backup and recovery Restore Creating restore mediaPerforming a system restore Restoring using the restore media Backing up and recovering your information Changing the computer boot orderUsing Windows Backup and Restore Using Windows system restore points When to create restore pointsCustomer support Contacting customer supportLabels ComponentDC plug of external HP power supply SpecificationsInput power Operating environment Index WlanHdmi USB

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