HP 4720S, 4520S manual

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2.Release the RTC battery from the socket (1) on the system board and lift the battery (2) up.

Reverse this procedure to install the RTC battery.

108 Chapter 4 Removal and replacement procedures

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Contents HP ProBook 4520s Notebook PC HP ProBook 4720s Notebook PC First Edition March Document Part Number MSG revision history Revision Publication date DescriptionIv MSG revision history Safety warning notice Vi Safety warning notice Table of contents Computer Setup 122 Specifications 132 Recycling 157 Battery Display Index 163 Product description ProcessorsProduct description Memory Category Description HP ProBook 4520s UMA 4720s DiscreteHard drives Audio/visual Optical drivesDiskette drive ModemCards External mediaPorts Keyboard PowerOperating system Preinstalled with Microsoft Office Pointing devicesCategory Description HP ProBook 4520s UMA 4720s Discrete Restore media Web SupportPage TouchPad Top ComponentsComponent Description Lights Buttons, switches, and speakers select models only Keys Fn keyFront components Right-side components Left-side componentsBottom components Display Wireless antennas ComponentAdditional hardware components Service tag Illustrated parts catalogItem Description Computer major componentsFor use only with computers with 17.3-in displays Illustrated parts catalog Speakers Power button boardThermal shield Top coverDescription Bluetooth module Fan/heat sink assemblyBroadcom 4312G 802.11b/g WiFi adapters Broadcom 4322 AGN, 802.11a/b/g/n 593836-001 Intel Core processors Memory module BatteryModem module Base enclosure750-GB, 5400-rpm 598699-001 640-GB, 5400-rpm 617667-001 Description Spare part number Display bezel Display assembly componentsWebcam module Description Spare part number Display Hinge Kit Plastics KitLCD Cable Kit with webcam cable Cable Kits Description Spare part number Base Cable KitDescription Spare part number Misc LCD Cable Kit Display cable, HD+ 629030-001Mass storage devices Description Spare part numberMiscellaneous parts Item Description Spare part numberDescription Spare part number Screw Kit, includes 598672-001 Sequential part number listing Spare part Description NumberSequential part number listing Illustrated parts catalog 598670-001 Illustrated parts catalog Sequential part number listing Illustrated parts catalog Sequential part number listing 617667-001 640-GB, 5400-rpm hard drive Sequential part number listing Service considerations Preliminary replacement requirementsTools required Cables and connectors Grounding guidelines Electrostatic discharge damagePackaging and transporting guidelines Equipment guidelines Material Use Voltage protection levelComponent replacement procedures Service tagComputer feet Battery Switch cover and keyboard Page Page Page Memory module Optical drive Page Power button board Page Speakers Page Thermal shield Page Page Wlan module Intel Centrino Wireless-N1000 802.11 b/gBroadcom 4312 802.11b/g Wlan modules Intel Wi-Fi Link 1000, 802.11b/g/n Wlan module Adapter Component replacement procedures Page Page Wwan module Page Heat sink and fan Page Page Page Page Intel Pentium processors ProcessorDescription Spare part number Intel Core processors Intel Celeron processorPalm rest Description Spare part number Page Hard drive Page Display assembly on computers with 17.3-in displays Page Page Page Page Page Page Display assembly on computers with 15.6-in displays Description Spare part number Page Page Page Page Page Top cover Page Page Page RTC battery Description Spare part number RTC batteryPage Bluetooth module Modem module Page Audio board Page System board Page Page USB connector assembly Remove the thermal shield see Thermal shield on RJ-11 connector assembly Power connector assembly Page Starting Computer Setup Computer SetupUsing Computer Setup Restoring factory settings in Computer Setup Computer Setup menus Select To do thisIgnore Changes and Exit Security menu System Configuration menu Use of a USB keyboard in Computer Setup even Select Computer Setup Enable/disable the eSATA port select models only Computer specifications Display specifications 39.1 cm 21.0 cm35.98 cm Viewing angle @ CR10Hard drive specifications Applicable disc DVD-ROM Drive specificationsAccess time Cache bufferApplicable disc Read DVD±RW Double-Layer Combo Drive specificationsTransfer mode WriteApplicable disc Read Write CD-DA, CD+EG, CD-MIDI, CD-TEXT, CD-ROM, CD-ROM XAOverview Backup and recovery in WindowsBacking up your information Select Start All Programs Maintenance Backup and Restore Performing a recovery Using the Windows recovery toolsUsing f11 Using a Windows 7 operating system DVD purchased separatelyBackup and recovery in Windows Vista Performing a recovery Using the Windows recovery tools Follow the on-screen instructions Backup and recovery Backup and recovery in Windows XP Recovering your information Page Audio-in microphone Pin SignalAudio-out headphone External monitor Hdmi RJ-11 modem RJ-45 network Universal Serial BusPower cord set requirements Requirements for all countries and regionsRequirements for specific countries and regions Country/region Accredited agency Applicable note numberBattery RecyclingPage Page Page Page Page Index HP QuickLook light USB DVD
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4720S, 4520S specifications

The HP ProBook 4720s is a well-engineered business laptop that combines performance, durability, and affordability, making it suitable for professionals and small business owners alike. Introduced as part of the HP ProBook series, this model stands out for its robust build quality and essential features tailored to meet the demands of various work environments.

One of the main features of the HP 4720s is its 17.3-inch display. This spacious screen provides a generous workspace for multitasking, with a resolution of 1600 x 900 pixels. The anti-glare technology helps reduce reflections, ensuring that users can work comfortably in different lighting conditions. The large screen also makes it suitable for presentations and sharing visuals with colleagues.

Under the hood, the HP ProBook 4720s is equipped with Intel's second generation Core processors. The inclusion of options such as the Intel Core i5 and i7 provides users with the power necessary for demanding applications while maintaining energy efficiency. With up to 8GB of DDR3 RAM, multitasking is seamless, allowing users to run multiple applications simultaneously without experiencing lag.

Storage options are varied, including traditional hard drives and solid-state drives which offer faster data access speeds. This flexibility ensures that users can choose the configuration that best fits their needs, balancing performance and storage capacity.

In terms of connectivity, the HP 4720s offers a range of ports including USB 2.0 and USB 3.0, HDMI, and Ethernet, providing users with versatile options for connecting peripherals and external displays. The integrated webcam and microphone are essential for video conferencing, essential in today’s remote working environment.

Another characteristic that makes the HP ProBook 4720s stand out is its security features. The optional fingerprint reader and HP’s Client Security software provide enhanced protection for sensitive data. This focus on security is crucial for professionals who handle confidential information.

Moreover, the laptop's design features a sturdy chassis that meets military specifications for durability. This ruggedness is complemented by a spill-resistant keyboard, which enhances its usability in various environments.

Overall, the HP ProBook 4720s embodies a balance of performance, functionality, and durability. Its features cater well to business users seeking a reliable device, making it a commendable choice in the competitive landscape of laptops. Whether for office use or on-the-go productivity, the HP 4720s delivers a solid computing experience.