1, check the maximum memory supported by your notebook, how many memory slots are there, how big the maximum memory supported by a single slot is, and how often the memory works (you can go to Dell official website, Pacific Computer Network, Zhongguancun Online and other websites and enter the model of your notebook for inquiry);
2. Buy suitable memory chips (with the same working frequency, such as using DDR3 at the same time), which can be purchased in a physical store or online;
3. Unscrew the cover on the back of the computer with a screwdriver and you will see the memory stick;
4. Select one of the memory slots, hold both ends of the memory stick and push it down at a 45-degree angle until it can't be pushed.
5. Gently press down with your fingertips until the buckles on both sides block the memory module.
6, boot test, you can download software tests such as Master Lu or driving elves. Before my computer was installed, it was 2G memory. After adding 4G memory, it became 6G, and Master Lu tested it as 6G, indicating that the installation was successful.
7. Screw the cover on the back with a screwdriver.