The Dell Dimension XPS R400 is a desktop computer with a Intel Pentium II 400MHz processor and 384MB of RAM. This model was manufactured in China and is known for its high performance capabilities. Although it does not have power, it may still have value as a parts donor for other computers or for collectors interested in vintage computing technology. With its reputable brand and powerful hardware, the Dell Dimension XPS R400 could be a valuable addition to any computer collection or repair project.It appears to light up when press power button but not stay on.