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Basic SpecsHP ProBook 4540s (H4R27ES) 
Typenotebook
Operating SystemWin 8 64
ProcessorHP ProBook 4540s (H4R27ES)
ProcessorCore i7 2200 MHz
Processor Model3632QM
Number of Cores4
L2 cache1 MB
L3 Cache6 MB
MemoryHP ProBook 4540s (H4R27ES)
Memory8192 MB DDR3 1333 MHz
Maximum Memory8192 MB
Number of Total Memory Slots2
DisplayHP ProBook 4540s (H4R27ES)
Screen15.6-inch, 1366x768, widescreen
Backlight TechnologyLED
Graphics Controllerdiscrete and integrated
Graphics Chipset ModelAMD Radeon HD 7650M
Graphics Memory2048MB GDDR3
Storage DevicesHP ProBook 4540s (H4R27ES)
Optical Drive TypeDVD-RW, internal
Storage Size750 GB Serial ATA
Hard Drive Speed7200 r/min
CommunicationHP ProBook 4540s (H4R27ES)
LAN/ModemNIC 1000 Mbit/s
Wireless Communicationbluetooth, Wi-Fi 802.11n
Bluetooth Standard4.0
InterfacesUSB 2.0x2, USB 3.0x2, VGA (D-Sub), HDMI, microphone input, audio output/headphone, LAN (RJ-45)
Expansion slotsHP ProBook 4540s (H4R27ES)
Memory Card ReaderYes
BatteryHP ProBook 4540s (H4R27ES)
Maximum Battery Run Time4 hours
Number of Battery Cells6
Battery ChemistryLi-Ion
Input DevicesHP ProBook 4540s (H4R27ES)
Pointing Device TypeTouchpad
AudioHP ProBook 4540s (H4R27ES)
SpeakersYes
MicrophoneYes
Detailed SpecsHP ProBook 4540s (H4R27ES)
WebcamYes
Featuresmetal case lock slot
Dimensions (HxWxT)375x256x28 mm
Weight2.47 kg