Can dell optiplex gx620 mini tower computer be ungraded to 4GB memory?

Indeed the memory of dell optiplex GX620 can be upgraded. There are lots of free software available online from where you can download the upgrade of dell optiplex GX620 memory. For the free download of the upgrade of dell optiplex GX620 memory you have to just login to the websites like the cnet, adobe, brothersoft, filecluster, softpedia, soft32. You have to just follow the following steps in process of downloading the software for free. You have to just type the name of the website in your web browser. After that choose the option of the software or write in the search box of website the name of the required software. A list of the available software will be displayed then. You have to just single click on that and a new window will open. The download link will be displayed and you have to just single click on that. A new window will open asking about the download location you have to just choose the location from the computer where you want to download that software. Press OK after that and the download will start in some moment. Now you have to just install that software.