... ,multi touch under win 7 4.RJ45,RS232,USB, VGA,SD N 455 1.67G CPU 10.1 inch tablet pc touch ... , USBx3,VGAx1,Micro phone Input X1,Earphone outputx1,Power x1,SD Card slot x1, 3G modem slot(optional)x1Stand Battery7.4V ... Temperature-20 to 60°cWorking Humidity20%-80%Storage Humidity10%-90% N 455 1.67G CPU 10.1 inch tablet pc touch ...