The model available as follows: 1, Laptop DDR2 RAM (Sodimm)/Desktop DDR RAM 2, DDR1 RAM 400MHz/ DDR2 RAM 667MHz/ DDR2 RAM 800MHz/DDR3 RAM 1066MHz/DDR3 RAM 1333MHz 3, DDR Memory 512MB/ DDR2 Memory 1GB/ DDR2 Memory 2GB /DDR3 Memory 4GB/DDR2 2X2GB 4, DDR PC 2700/ DDR2 PC 5300 / DDR2 PC 6400 5, Kingston DDR Memory RAM /Kingston Memory ModulesDDR3 1066MHz/DDR3 Memory Module / DDR3RAM type: DDR3/DDR3 RAM memory Bus speed: 1066/1333MHz DDR3 Capacity: 1GB/2GB OEM and Brand are available Micro, Nanya, Hynix, chips... Compatible with all the motherboards Bulk packing PC RAM DDR3 DDR3 1333MHz 1GB 64*8 micron chips DDR3 1333MHz 2GB 128*8 micron chips Laptop SODIMM DDR3 DDR3 1066MHz SO-DIMM 1GB MT/Hynix chips DDR3 1066MHz SO-DIMM 2GB nanya chips