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DisplayHP ProBook 4540s D4R48US 
Screen Size15.60 "
Display Screen TypeActive Matrix TFT Color LCD
Aspect Ratio16:9
Screen ModeHD
Screen Resolution1366 x 768
Backlight TechnologyLED
Graphics Controller ManufacturerIntel
Graphics Controller ModelHD 4000
Graphics Memory TechnologyDDR3 SDRAM
Graphics Memory AccessibilityShared
Hard DriveHP ProBook 4540s D4R48US
Storage Size500 GB
Hard Drive InterfaceSerial ATA/300
Hard Drive RPM7200
Optical Drive TypeDVD-Writer
MemoryHP ProBook 4540s D4R48US
Memory Card SupportedSecure Digital (SD) Card, MMCplus, MultiMediaCard (MMC), Memory Stick, Secure Digital High Capacity (SDHC), Secure Digital Extended Capacity (SDXC)
Standard Memory4 GB
Maximum Memory8 GB
Memory TechnologyDDR3 SDRAM
Number of Total Memory Slots2
Memory Card ReaderYes
NetworkHP ProBook 4540s D4R48US
Wireless LANYes
Wireless LAN StandardIEEE 802.11n
Ethernet TechnologyGigabit Ethernet
BluetoothYes
Bluetooth StandardBluetooth 4.0 HS
DimensionsHP ProBook 4540s D4R48US
Height1.1"
Width14.8"
Depth10.1"
Weight (Approximate)86.4 oz
ColorSilver
Detailed SpecsHP ProBook 4540s D4R48US
WebcamYes
MicrophoneYes
SpeakersYes
ProcessorHP ProBook 4540s D4R48US
Processor ManufacturerIntel
Processor TypeCore i3
Processor Modeli3-3110M
Processor Speed2.40 GHz
Processor CoreDual-core (2 Core)
Cache3 MB
Chipset ManufacturerIntel
Chipset ModelHM76 Express
SoftwareHP ProBook 4540s D4R48US
Operating SystemWindows 7 Home Premium
Operating System Architecture64-bit
Input DevicesHP ProBook 4540s D4R48US
Pointing Device TypeTouchPad
TouchPad FeaturesMulti-touch Gesture
BatteryHP ProBook 4540s D4R48US
Battery ChemistryLithium Ion (Li-Ion)
InterfacesHP ProBook 4540s D4R48US
HDMIYes
Total Number of USB Ports4
Number of USB 2.0 Ports2
Number of USB 3.0 Ports2
VGAYes
Audio Line InYes
Audio Line OutYes