CPU : Celeron Dual Core RAM : 4 GB HDD : 500 GB Screen : 15.6" HD LED Optical Drive : DVD RlW Graphic : Intel Graphic Operating System: Dos Processor Intel CDC N4000 Clock Speed 1.1-2.6GHz Cache 4MB Memory: RAM4GB, DDR4, 2400MHz; up to 8GB (additional memory sold separately) Storage: 500GB 5400 rpm Hard Drive Specs GraphicIntel® HD GraphicsDisplay15.6-inch HD (1366 x 768) Truelife LED-Backlit Display Battery40 WHr, 4-Cell Battery (removable) Optical DeviceDVD-Writer - tray Web CamHD (720p) capable webcam, microphone Network Wifi802.11acBluetoothBluetooth 4.1Network ReaderSD Card Reader (SD, SDHC, SDXC)AudioYesI/O Ports1. SD Card Reader (SD, SDHC, SDXC) 2. Headset Jack 3. USB 2.0 4. Kensington Lock 5. Power In 6. HDMI™ 1.4a 7. 2 x USB 3.1 Gen 1 Others Weight4.86lbs (2.21kg)Dimensions1. Height: 0.93 " (23.65mm) 2. Width: 14.96 " (380mm) 3. Depth: 10.25 " (260.3mm) Brand Dell SKU 100253025_NP-1020510020 Model Dell Inspiron 3573