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1 x 512 MB 240-pin 400 MHz 512 MB 512MB DDR2 SDRAM Memory Module 73P3221-AX Lenovo: ThinkCentre A51 8131, 8132, 8133, 8134 ThinkCentre A51 8135, 8136, 8137, 8138 ThinkCentre A51 9212 ThinkCentre A51p (8420, 8422, 8423, 8427-xxx) Axiom Axiom Memory Solutions DDR2 SDRAM DDR2-400/PC2-3200 Lifetime Non-ECC RAM Module Unbuffered www.axiommemory.com
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