The listing, Memory Sticks, 2 DDR2, 512 sticks, used has ended.
Two used DDR2, 512"s Memory sticks. PC2-5300. One HYNIX and the other ADD-ON computer. They work, just have different computer now. Good upgrade for older, slower systems. Must have some knowledge of what you have and if upgradeable, or they won't work. You can't go lower, but higher is ok. I"m no expert, so only bid if noing what your looking at.