... (optional) Built-in 3G (optional) 1.CPU: Intel(R) Atom(TM) N455 1.66GHz, Chipset: Intel NM102.Operation System.: ... 9. Sound System: High definition Audio support 2.1 channel output, And Two Audio jacks,Build-in stereo speaker ... *USB 2.0 host, 1*Mic/earphone jack, 1*RJ45 port, 1*DC-In jack, 1*SD/MMC/MS card reader ... 3.42A Max,13.Dimension:260*165*23mm,About 1.0kg weight (Including Battery), 14.Built-in 3G ...