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DisplayHP Essential 620 WZ257UT 
Screen Size15.60 "
Display Screen TypeActive Matrix TFT Color LCD
Aspect Ratio16:9
Screen ModeWXGA
Screen Resolution1366 x 768
Backlight TechnologyLED
Graphics Controller ManufacturerIntel
Graphics Controller ModelGMA 4500MHD
Hard DriveHP Essential 620 WZ257UT
Storage Size320 GB
Hard Drive InterfaceSerial ATA/300
Hard Drive RPM5400
Optical Drive TypeDVD-Writer
MemoryHP Essential 620 WZ257UT
Memory Card SupportedSecure Digital (SD) Card, MultiMediaCard (MMC)
Standard Memory2 GB
Maximum Memory8 GB
Memory TechnologyDDR3 SDRAM
Memory StandardDDR3-1066/PC3-8500
Number of Total Memory Slots2
Memory Card ReaderYes
NetworkHP Essential 620 WZ257UT
Wireless LANYes
Wireless LAN ManufacturerRealtek
Wireless LAN StandardIEEE 802.11n
Ethernet TechnologyFast Ethernet
DimensionsHP Essential 620 WZ257UT
Height1.1"
Width14.6"
Depth9.8"
Weight (Approximate)83.2 oz
Detailed SpecsHP Essential 620 WZ257UT
WebcamYes
MicrophoneYes
ProcessorHP Essential 620 WZ257UT
Processor ManufacturerIntel
Processor TypeCeleron
Processor ModelT3000
Processor Speed1.80 GHz
Processor CoreDual-core (2 Core)
Cache1 MB
Bus Speed800 MHz
Chipset ManufacturerIntel
Chipset ModelGM45 Express
SoftwareHP Essential 620 WZ257UT
Operating SystemWindows 7 Home Premium
Operating System Architecture32-bit
Input DevicesHP Essential 620 WZ257UT
Pointing Device TypeTouchPad
I/O ExpansionsHP Essential 620 WZ257UT
Expansion Slot TypeExpressCard/34
BatteryHP Essential 620 WZ257UT
Battery ChemistryLithium Ion (Li-Ion)
InterfacesHP Essential 620 WZ257UT
HDMIYes
Total Number of USB Ports3
Number of USB 2.0 Ports3
VGAYes