Features:Notebook memory is designed for DDR2 PC2-6400 laptops and is fit for intel/AMD motherboard. With frequency up to 800MHz, it ensures high performance and improves the fluency of system.2GB - Large capacity provides powerful performance and storage space for daily reading and writing.Built-in high quality chips for stable performance and high speed operation.High-quality circuit module board, effectively avoiding corrosion and wear, durable and easy to carry.Specification:Model: DDR2Memory frequency: 800MHZMemory capacity: 2GCompatible: Fully compatible (for intel / AMD)Bandwidth: PC2-6400Voltage: 1.8VPin number: 200PinProduct size: about 6.7 * 3 * 0.3cmWeight: Approx. 12.8g Package list:1 * DDR2 MemoryNotes:1. Please check the memory type of your computer below to choose the best one for your computer. 2. Please note that memory models is divided into SD, DDR, DDR2, and DDR3. You can refer to the following table, and if you still don't know which memory is right for your computer, use the software test to see what memory your computer needs, to protect the CPU and your computer. TypeSuitable memoryPC2100DDR 266 memoryPC2700DDR 333 memoryPC3200DDR 400 memoryPC4200DDR2 533 memoryPC5300DDR2 667 memoryPC6400DDR2 800 memoryPC8500DDR3 1066 memoryPC10700DDR3 1333 memoryPC12800DDR3 1600 memory3. If the memory appears below situations: blue screen, crash, restart, alarm sounds, please follow the following methods one by one, if not, it is sure that it is not compatible.3.1. The memory is not inserted, or the gold finger is oxidized. Wipe the memory gold finger with an eraser and reinsert it, or change the slot;3.2. The memory slot is dusty or oxidized. Wash it with a brush by the water.3.3. Memory is not compatible, try to change the memory. 3.4 CMOS does not discharge and restore the factory settings, maybe it is normal (the motherboard battery is taken down, and then installed back).3. 5. The motherboard is not compatible with the CPU, change the CPU test. 1Notebook memory is designed for DDR2 PC2-6400 laptops and is fit for intel/AMD motherboard. 22GB - Large capacity provides powerful performance and storage space for daily reading and writing. 3With frequency up to 800MHz, it ensures high performance and improves the fluency of system. 4Built-in high quality chips for stable performance and high speed operation. 5High-quality circuit module board, effectively avoiding corrosion and wear, durable and easy to carry.