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DisplayHP Essential 420 XL404LT 
Screen Size14.00 "
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
Graphics Memory TechnologyDDR3 SDRAM
Graphics Memory AccessibilityShared
Hard DriveHP Essential 420 XL404LT
Storage Size320 GB
Hard Drive InterfaceSerial ATA/300
Hard Drive RPM5400
Optical Drive TypeDVD-Writer
MemoryHP Essential 420 XL404LT
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 420 XL404LT
Wireless LANYes
Wireless LAN ManufacturerRealtek
Wireless LAN ModelRTL8191SE
Wireless LAN StandardIEEE 802.11n
Ethernet TechnologyFast Ethernet
BluetoothYes
Bluetooth StandardBluetooth 2.1
DimensionsHP Essential 420 XL404LT
Height1.1"
Width13.2"
Depth9.0"
Weight (Approximate)80.0 oz
ColorStone Gray
Detailed SpecsHP Essential 420 XL404LT
MicrophoneYes
ProcessorHP Essential 420 XL404LT
Processor ManufacturerIntel
Processor TypeCore 2 Duo
Processor ModelT6570
Processor Speed2.10 GHz
Processor CoreDual-core (2 Core)
Cache2 MB
Bus Speed800 MHz
Chipset ManufacturerIntel
Chipset ModelGM45 Express
SoftwareHP Essential 420 XL404LT
Operating SystemWindows 7 Professional
Operating System Architecture32-bit
Input DevicesHP Essential 420 XL404LT
Pointing Device TypeTouchPad
I/O ExpansionsHP Essential 420 XL404LT
Expansion Slot TypeExpressCard/34
BatteryHP Essential 420 XL404LT
Battery ChemistryLithium Ion (Li-Ion)
Maximum Battery Run Time5.50 Hour
InterfacesHP Essential 420 XL404LT
HDMIYes
Total Number of USB Ports3
Number of USB 2.0 Ports3
VGAYes