Memory sticks are not devices such as printers and
Dell XPS 400 PC Desktop
Installing RAM on a desktop computer is of moderate difficulty for most non-technical people. Before beginning any memory upgrade, make sure the proper RAM has been purchased. The Dell XPS 400 requires DDR2 RAM (240-pin DIMM). Preparing the Computer
b> The computer must be unplugged before any work can be completed and the proper precautions must be taken, such as wearing an anti-static wristband. Also, replacing the RAM on a Dell machine could void its warranty. To install the new RAM, the case of the computer needs to be opened. Replacing the RAM
b> The motherboard has four RAM slots. Each slot takes one stick of RAM (up to 1 GB per stick). The XPS 400 can utilize up to 4 GB of RAM. If adding RAM, put the new RAM in an empty slot. If replacing the RAM, take out the existing one and then put the new RAM into the machine. Important Notes
b> While the Dell XPS 400 has four RAM slots, if only two sticks of RAM are to be used, they must be inserted into slots 1 and 3 or slots 2 and 4 for optimal performance. A single stick of RAM should be inserted into slot 1. Always put the largest ram module closest the CPU central processing unit.
Start your computer Wait for Windows to load. Click on "My Computer" and select "Properties" using right-click in the Explorer window. This will open "Systems Properties." Click on the "General" tab. Here you can view the physical memory installed on your computer. The amount indicated is the total RAM installed on your computer. RAM is usually 32 MB, 64 MB or 128 MB in older PC versions. Newer PCs are usually equipped with 256 MB, 512 MB or even higher RAM.
b>If you're not sure if a module is right for your system, use the Crucial Memory Advisor tool
for a list of guaranteed compatible modules.
First you will need to select the manufacturer from a drop down list then select your product line from a drop down list then select the model then click find it will take you directly to compatible ram also you will have an option to scan your system. You should always ask for a guarantee on the compatibility before making any purchase and try to buy for working pairs if possible.