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HP ProBook 4520s/4720s Notebook PC Product Specifications

Product description

HP ProBook 4520s and 4720s Notebook PCs

Product features

Mobile Intel HM57 Express Chipset
  • Intel Core i7-620M Processor (2.66 GHz, 4MB L3 cache)* Up to 3.33 GHz with Intel Turbo Boost Technology
  • Intel Core i5-540M Processor (2.53 GHz, 3MB L3 cache)* Up to 3.06 GHz with Intel Turbo Boost Technology
  • Intel Core i5-520M Processor (2.4 GHz, 3MB L3 cache)* Up to 2.93 GHz with Intel Turbo Boost Technology
  • Intel Core i5-430M Processor (2.26 GHz, 3MB L3 cache)* Up to 2.53 GHz with Intel Turbo Boost Technology
  • Intel Core i3-350M Processor (2.26 GHz, 3MB L3 cache)
  • Intel Core i3-330M Processor (2.13 GHz, 3MB L3 cache)
Processor speed denotes maximum performance mode; processors will run at lower speeds in battery optimization mode.
* Intel's numbering is not a measurement of higher performance.
Standard: DDR3 PC3-10600 SDRAM (1333 MHz)* Two SODIMM slots supporting dual-channel memory 1024MB, 2048MB, or 4096MB
Maximum: Upgradeable to 8192MB with 4096MB SODIMMs in slots 1 and 2
Dual-channel: Maximized dual-channel performance requires SODIMMs of the same size and speed in both memory slots
Due to the non-industry standard nature of some third-party memory modules, we recommend HP branded memory to ensure compatibility. If you mix memory speeds, the system will perform at the lower memory speed. Full availability of 4GB or more of memory requires a Windows 64-bit operating system or Linux. With Windows 32-bit operating systems, the amount of usable memory is dependent upon your configuration, so that above 3GB all memory may not be available due to system resource requirements.
* Memory speed is processor dependent.
Integrated graphics (HP ProBook 4520s only):
  • Intel HD Graphics
Discrete graphics:
  • ATI Mobility Radeon HD 4350 graphics controller with 512MB dedicated video memory
  • Microsoft DirectX 10.1 (discrete),10 (integrated) capable
  1. HP ProBook 4520s:
    • 15.6 in diagonal LED-backlit HD anti-glare (1366 x 768 resolution)
    • 15.6 in diagonal LED-backlit HD BrightView (1366 x 768 resolution)
  2. HP ProBook 4720s:
    • 17.3 in diagonal LED-backlit HD+ anti-glare (1600x900 resolution)
    • 17.3 in diagonal LED-backlit HD+ BrightView (1600x900 resolution)
Optional HP Privacy Filter
External: Up to 32-bit per pixel color depth
VGA port supports resolutions up to 1600 x 1200 at 75 Hz, and lower resolutions at up to 100 Hz.
HDMI port supports direct connection to high-definition displays with up to 1920 x 1080 resolution and 7-channel audio with one convenient cable (not included).
Resolutions are dependent upon monitor capability, and resolution and color depth settings.
The HP spill-resistant keyboard is designed using a thin layer of Mylar film under the keyboard and a drain system that funnels fluid through a hole in the bottom of the notebook. This minimizes the risk of damage to sensitive components underneath. The 101/102-key compatible keyboard features a full-pitch key layout with desktop keyboard features, such as the isolated inverted-T cursor control keys, editing keys, both left and right control and alt keys, full separate numeric keypad, and 12 function keys. US and International key layouts are available. Other features include hotkeys for instant access to power conservation and brightness, and 19.05 x 19.05 mm key pitch (center-to-center spacing).
Pointing device
ClickPad with gestures support: Two-finger scroll, zoom, pinch and pivot rotate
Expansion card slots
ExpressCard/34 slot: Supports ExpressCard/34 (34 mm x 75 mm x 5 mm) card sizes
Media Card Reader: Supports SD (Secure Digital), MMC (MultiMedia Card), Memory Stick, Memory Stick Pro, Memory Stick Duo*, xD-Picture card
* Memory Stick Duo Adapters are required and sold separately. Inserting a Memory Stick Duo Card directly into your notebook could damage the memory card and/or notebook.
Internal Storage Device
Hard drives 250/320/500GB 7200 rpm SMART SATA II Hard Drive
Up to 15GB is reserved for the system recovery software.
HP 3D DriveGuard The hard drive is mounted directly to the notebook frame, reducing the transmission of shock to the hard drive. Uses three-axis digital motion detection with intelligent sensitivity to help protect the hard drive during normal use from shock and vibration. The digital accelerometer temporarily halts all data transfer and parks the hard drive when abrupt motion is detected.
Fixed optical drives:
  • Blu-ray ROM DVD+/-RW SuperMulti DL LightScribe Drive*
  • DVD+/-RW SuperMulti DL LightScribe Drive
  • DVD-ROM Drive
* Support for the Blu-ray DVD drive on configurations with integrated graphics requires Windows7 or Windows Vista; configurations with discrete graphics support it with any offered Windows operating system.
Power Supply
Models with integrated graphics: External 65 W Smart AC adapter
Models with discrete graphics: External 90 W Smart AC adapter
Primary battery:
  1. HP ProBook 4520s
    • HP 9-cell (93 WHr) Li-Ion battery
    • HP 6-cell (47 WHr) Li-Ion battery
  2. HP ProBook 4720s:
    • HP 8-cell (73 WHr) Li-Ion battery


HP un2420 EV-DO/HSPA Mobile Broadband Module
Technology/Operating Bands: GSM/GPRS/EDGE: 850 MHz(Cell), 900 MHz(EGSM), 1800 MHz(DCS), 1900 MHz (PCS)
Wireless Protocol Standards:
GSM/GPRS/EDGE: Class B, Multi-slot operation, coding schemes CS1 – CS4 and MSC1 – MSC9
UMTS/WCDMA: Release 99 and Release 6
CDMA: 1xEVDO Release 0 and Release A, IS-95A, IS-95B, IS-2000
Atheros 9285G 802.11b/g/n 1x1 WiFi Adapter
  • Wi-Fi certified
  • Wired Equivalent Privacy (WEP) support up to 128-bit keys
  • Wi-Fi Protected Access (WPA) and WPA2 support
  • 802.1x authentication support, including EAP-TLS, EAP-TTLS, PEAP-GTC, PEAP-MSCHAPv2, and LEAP
  • Advanced Encryption Standard (AES) support
  • Dual antennas integrated in the display enclosure
Intel Centrino Advanced-N 6200
Integrated support for 802.11a, b, g, and n1 Up to 300 mbps data rate
Broadcom 4322AGN 802.11a/b/g/n WiFi Adapter
Integrated support for 802.11a, b, g, and n1 Up to 300 mbps data rate
Broadcom 4312G 802.11b/g WiFi Adapter
Integrated support for 802.11 b and g Up to 54 mbps data rate
HP Integrated Module with Bluetooth Wireless Technology
HP Integrated Module with Bluetooth Wireless Technology
1: In countries where 802.11n is not allowed, this capability is not enabled.


  • High Definition Audio support
  • Integrated stereo speakers
  • Integrated digital microphone
  • Stereo headphone/line out
  • Stereo microphone in
  • Optional 2 MP webcam
    • Supports videoconferencing and still image capture
    • Improved quality for video streaming and still image capture (1600x1200 resolution)
    • Up to 30 frames/sec
    • Fixed focus lens
    • 16-bit true color (camera sensor up to UXGA resolution)

Physical specifications

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
Height varies depending upon where on the notebook the measurement is made.
HP ProBook 4520s: Starting at 2.39 kg (5.26 lb)
HP ProBook 4720s: Starting at 2.97 kg (6.51 lb)
Weight includes 6-cell battery, no optical drive. Weight varies by configuration and components.
Stand-Alone Power Requirements (AC Power)
  • Normal Operating Voltage: 18.5 V
  • Max Operating power: < 90 W or < 65 W
0° to 35°C (32° to 95°F) (not writing optical)
5° to 35°C (41° to 95°F) (writing optical)
Non-operating: –20° to 60°C (–4° to 140°F)
Relative Humidity
Operating: 10% to 90%, non-condensing
Non-operating: 5% to 95%, 38.7°C (101.6°F) maximum wet bulb temperature
Altitude (unpressurized)
Operating: –15.24 to 3,048 m (–50 to 10,000 ft)
Non-operating: –15.24 to 12,192 m (–50 to 40,000 ft)


Operating System
  • Windows 7 Starter 32
  • Genuine Windows XP Home
  • SUSE Linux Enterprise 11
  • DOS
  • Red Flag Linux (PRC only)

Warranty information

Terms of warranty apply to the individual model purchased. To see if your HP product is still in warranty, go to the HP Product Warranty Check page.






Country/Region: Flag United States