1GB 2x512MB Memory for HP - Compaq Pavilion ze4600 Series Laptop/Notebook Could be Samsung, Kingston, Hynix, Smart, Corsair, Elpida, Micron, or Nanya Warranty: LIFETIME WARRANTY WorldWide Shipping to most countries & USA Capacity: 1gb (2x512mb) - You receive 2 Stick of the 512mb SODIMMS for a total of 1gb