Kingston KTM4982/2G 2GB DDR2-667 240-Pin SDRAM Desktop Memory Module * 2GB (2 x 1GB) SDRAM memory module * Compatible with Lenovo ThinkCentre A52 8153= 8154= 8166= 8167-xxx, 8155= 8156= 8157-xxx, 8158= 8159= 8160-xxx, 8161= 8162= 8163-xxx, 8164= 8165-xxx, 8168= 8169= 8170-xxx, 8287= 8296-xxx, 8288= 8289-xxx, 8297= 8298-xxx, 8326= 8328= 8329-xxx, 8327= 8340= 8343-xxx, 8341= 8342= 8344-xxx, 8380= 8382-xxx, 8381-xxx, 8782= 8783= 8784-xxx, 8785= 8786= 8788-xxx, ThinkCentre A60 8013= 8700-xxx, 8976= 8979-xxx, 8986= 8991-xxx, 9266= 9269-xxx, 9282= 9283-xxx, 9374= 9383= 9384-xxx, 9631-xxx, ThinkCentre M52 8099= 8116= 8215-xxx, 8110= 8111= 8112-xxx, 8113= 8114= 8115-xxx, 8211= 8212= 8213= 8214= 8215, 9210= 9211-xxx * 240-pin form factor * 667MHz memory speed