Presario V2331US 1GB PC2700 DDR Memory for Compaq Presario V2331US RAM-1Gb 1024MB DDR SODIMM 333MHz PC2700 200pin 2.5v memory upgrade.The latest high density chips which draw less power and run cooler than other brands. This keeps laptop notebook run more stable. Equalant part # DC890B 324702-001 344868-001 KTH-ZD7000/1G 31P9834 and KTT3311/1G and many more.