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Keyboard
KeyboardKeyboard
Keyboard
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, 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
Pointing devicePointing device
Pointing device
ClickPad with gestures support:
Two-finger scroll, zoom, pinch and pivot rotate
Expansion card slots
Expansion card slotsExpansion card slots
Expansion card slots
ExpressCard/34 slot
ExpressCard/34 slotExpressCard/34 slot
ExpressCard/34 slot
Supports ExpressCard/34 (34 mm x 75 mm x 5 mm) card sizes
Media Card Reader
Media Card ReaderMedia Card Reader
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.
Storage
StorageStorage
Storage
Internal Storage Device
Internal Storage DeviceInternal Storage Device
Internal Storage Device
250/320/500 GB 7200 rpm SMART SATA II Hard Drive
640 GB 5400 rpm SMART SATA II Hard Drive
NOTE:
NOTE:NOTE:
NOTE:
Up to 15 GB is reserved for the system recovery software.
HP 3D DriveGuard
HP 3D DriveGuardHP 3D DriveGuard
HP 3D DriveGuard
(Windows models only)
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
Fixed optical drivesFixed optical drives
Fixed optical drives
Blu-ray ROM DVD+/-RW SuperMulti DL LightScribe Drive
*
DVD+/-RW SuperMulti DL LightScribe 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.
QuickSpecs
HP ProBook 4320s Notebook PC
HP ProBook 4320s Notebook PCHP ProBook 4320s Notebook PC
HP ProBook 4320s Notebook PC
HP ProBook 4420s Notebook PC
HP ProBook 4420s Notebook PCHP ProBook 4420s Notebook PC
HP ProBook 4420s Notebook PC
Standard Features (availability may vary by country)
DA - 13568 North America — Version 10 — July 23, 2010
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