Crucial 4 GB (2 x 2GB) Kit PC2-6400 800MHz SODIMM. 4GB kit consisting of (2) 2GB DDR2 Notebook modules that operates at speeds up to 800 MT/s and has a CL6 latency. It is Unbuffered and is non-ECC. Speed: DDR2 800MHz (PC2-6400).
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