1, first remove the battery, because in the case of electricity removal may damage the computer;
2, after the power off with a Phillips screwdriver counterclockwise twist the back cover fixed screws;
3, remove the rear cover we can see some hardware, such as hard disk, wireless network card, memory, where you can see the memory of two slots, one slot has been installed a 2G DDR3 memory;
4, the new increase in the memory of the slot inserted into the idle, about 45 degrees oblique, pay attention to the opposite side, so that the memory of the card on the finger on the slot on the fixed card, confirmed after the lower pressure of the memory, so that the two sides of the metal to withhold the good;
5, installed memory after the cover back, screwed up the screws, and then installed the battery, start the computer, view system information, you can see the memory capacity from 2G to 4G.