2GB (2X1GB) Dell DIMENSION 4550 RAM Memory (ALL MAJOR BRANDS) Could be Samsung, Kingston, Hynix, Smart, Corsair, Elpida, Micron, or Nanya Capacity: 2gb (2x1gb) - You receive 2 Sticks of the 1GB SDRAM DIMMs for a total of 2GB Warranty: LIFETIME WARRANTY WorldWide Shipping to most countries & USA