Feature:1. This memory module is dedicated for AMD, durable and easy to carry, suitable for desktop computers2. Using highquality chips and highquality memory particles, powerful and stable performance3. Provide you with quick response time and fluent operation efficiency whether playing games or working4. Increased memory capacity, increase computer operating speed, bring higher efficiency to your work and life5. Circuit module board possess highquality, high temperature resistance, quickly heat dissipation, corrosion and abrasion resistanceSpecification:Item Type: Desktop Computer Memory BarModel: DDR2Material: Printed circuit boardMemory Capacity: 4GBMemory Frequency: 800MhzBandwidth: PC2-6400Voltage: 1.8VPin Number: 240pinCompatibility: For AMD dedicated memoryApplicable Computer: DesktopNote:1. The memory is divided into memory card, DDR, DDR2, DDR3, DDR4 models. Please check the following list to know what memory has been installed in your computer, and what memory you need to buy. The memory DDR, DDR2, DDR3 and DDR4 are not common to each other, and the sockets are different, and you can't force to insert it in, so as not to damage the memory and the motherboard, remember!PC-2100 is DDR 266 memoryPC-2700 is DDR 333 memoryPC-3200 is DDR 400 memoryPC2-4200 is DDR2 533 memoryPC2-4300 is DDR2 533 memoryPC2-5300 is DDR2 667 memoryPC2-6400 is DDR2 800 memoryPC3-8500 is DDR3 1066 memoryPC3-10700 is DDR3 1333 memoryPC3-12800 is DDR3 1600 memoryPC4-17000 is DDR4 2133 memoryPC4-19200 is DDR4 2400 memoryPC4-2666V is DDR4 2666 memory2. If the memory appears: blue screen, crash, restart, alarm keeps beeping, please operate one by one according to the following methods. If fails, it is determined not compatible.a. The memory is not inserted well, or the gold finger is oxidized. Use an eraser to erase the memory gold finger and then reinsert it, or change the slot.b. The memory slot is dusty or oxidized. Use a brush and water for cleaning panel to wash it (if you dont have the water, just brush it down).c. The memory is not compatible, try another memory.d. CMOS did not discharge, restore to the factory settings, maybe it is normal (remove the motherboard battery, and then put it back).e. The motherboard is not compatible with the CPU, try changing the CPU..Package List:1 x Desktop Computer Memory BarNote:Note on compatibility that cannot be used: In the field of computer accessories, as long as you buy the right model and read the product description clearly, 99% of the motherboards can be used. Whether its graphics cards, motherboards or memory sticks, there will be 3% unknown factors causing incompatibility and other problems. The same brand is shipped in different batches, different chips, and different particle sizes, which may cause incompatibility problems. There may also be compatibility issues between memory and memory, and there may also be compatibility issues between motherboard and memory. What is the specific reason for the incompatibility, at present, there is no official correct statement. In short, compatibility does not mean quality problems.