25 16GB ddr3 1333MHZ ram for LAPTOP like Hynix Kingston transcends Samsung for LAPTOP! working in all company's motherboard 3 Years warranty Works in all motherboards which supports 4GB ddr3 ram with 1333mhz power! About this item Data rate: DDR3 Number of Channels: Dual Channel Compatible Device: Laptop Pins: 240 Series :1333Mhz / 10600 Memory Technology: DDR3 Memory Warranty Service Type: CARRY IN, Not Covered in Warranty: Physical Damage, Covered in Warranty: Manufacturing Defect, Warranty Summary: 3 years Product Type: 4GB