PNY 1GB DDR2 400 MHz DDR Optima Memory (MD1024SD2-667) New

It includes the memory stick, the packaging with instructions, and a PNY pamphlet. This is additional memory made by PNY. It has 1GB of memory. The model is DDR2 PC2-5300. It is compatible with PC2-5300 (667 MHz), PC2-4200 (533 MHz), and PC2-3200 (400 MHz). The memory stick is around 5.25 x 1.25 inches. It has a lifetime warranty.