Feature: 1. This memory module is dedicated for AMD, durable and easy to carry, suitable for desktop computers 2. Using high‑quality chips and high‑quality memory particles, powerful and stable performance 3. Provide you with quick response time and fluent operation efficiency whether playing games or working 4. Increased memory capacity, increase computer operating speed, bring higher efficiency to your work and life 5. Circuit module board possess high‑quality, high temperature resistance, quickly heat dissipation, corrosion and abrasion resistance Specification: Item Type: Desktop Computer Memory Bar Model: DDR2 Material: Printed circuit board Memory Capacity: 4GB Memory Frequency: 800Mhz Bandwidth: PC2-6400 Voltage: 1.8V Pin Number: 240pin Compatibility: For AMD dedicated memory Applicable Computer: Desktop Note: 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 memory PC-2700 is DDR 333 memory PC-3200 is DDR 400 memory PC2-4200 is DDR2 533 memory PC2-4300 is DDR2 533 memory PC2-5300 is DDR2 667 memory PC2-6400 is DDR2 800 memory PC3-8500 is DDR3 1066 memory PC3-10700 is DDR3 1333 memory PC3-12800 is DDR3 1600 memory PC4-17000 is DDR4 2133 memory PC4-19200 is DDR4 2400 memory PC4-2666V is DDR4 2666 memory 2. 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 don’t 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 Bar Note: 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 it’s 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.