CMS - 1GB 1x1GB DDR2-PC5300 667MHz Memory 4 Dimension E520, E520N, E521, E521N

CMS 1GB DDR2 SDRAM Memory Module - 1 GB (1 x 1 GB) - DDR2 SDRAM - 667 MHz DDR2-667/PC2-5300 - Non-ECC - Unregistered - 240-pin DIMM CMS 1GB DDR2 SDRAM Memory Module - 1 GB (1 x 1 GB) - DDR2 SDRAM - 667 MHz DDR2-667/PC2-5300 - Non-ECC - Unregistered - 240-pin DIMM