Basic Parameters CPU Type:AMD Duo core L325 Processor Speed:1500MHz L2 Cache:1M Main Board Chipset:AMD RS690+SB600 Processor Bus:533MHz Display features Size:18.5" Wide Recommended Resolution:1366*768@60Hz Brightness:300 cd Contrast Ratio(typ.):1000:1 Response Time(typ.):5 ms Viewing Angle (typ.):H:85°/85°, V: 80°/80° ( CR >=10 ) Number of Colors :16.7M Storage Memory:1G DDR2 Maximum Supported Memory:Upgrade to 4G Hard Drive Type:SATA 5400rpm Hard Drive Capacity:160G(up to 250G or 320G) Optical Drive:SATA DVD (Optional) Audio&Video Graphic Card: ATI 1270 (Dynamic memory 128M) Camera:Built-in 1.3M website camera Speaker:Inner Dolby Dimensional sound Communication Blue Tooth:optional Wi-Fi:built-in wireless adapter,support 802.11b/g/n 3G Module(CDMA2000,WCDMA,TD-SCDMA):optional Power DC in:DC 19V, 3.42A Power supply type:Adapter Power consumption:on<60W, Off<3W Input/Output Mouse:USB or Wirless(Optional) Keyboard:USB or Wirless(Optional) Card reader:3 in 1(SD/MMC/SM) USB ports:4 Audio:microphone*1 and earphone*1 Other Ports:N/A Lan:RJ45*1 Mechanical Features Unit Dimension (W x H x D):About 522mm*437mm*167mm Weight (Net):About 5KG(J Series)/4.5(K Series) Tilt (backwards):0° to 45° Others Operation System:Support Windows xp,vista,WIN 7 or linux