Memory DDR, DDR2, DDR3 are different from each other, slot sockets are not the same, can not be forced to insert, so as not to damage the memory and motherboard, remember! Features: 1. Applicable to DDR2 PC2-4200 desktop, compatible for AMD motherboard. 2. Built-in high quality chip for stable performance and high speed operation. 3. The high memory speed of 533MHz improves the speed of your computer and brings convenience to your life. 4. 1G capacity provides powerful performance and storage for daily reading and writing. 5. High-quality circuit module board, effectively avoiding corrosion and wear, durable and easy to carry. Specifications: Brand: Xiede Model: DDR2 Memory frequency: 533 Memory capacity: 1G Compatible: for AMD Compatible computer: Desktop Bandwidth: PC2-4200 Pin number: 240pin Size: Approx. 13.4*3*0.4CM/5.28*1.18*0.16inch Package List: 1 * Memory Module Note: PC2700 is DDR 333 memory PC3200 is DDR 400 memory PC4200 is DDR2 533 memory PC4300 is DDR2 533 memory PC5300 is DDR2 667 memory PC6400 is DDR2 800 memory PC8500 is DDR3 1066 memory PC10700 is DDR3 1333 memory PC12800 is DDR3 1600 memory If the memory appears: blue screen, crash, restart, alarm sounds, please follow the following methods one by one. If these methods don't work, then it is not compatible. 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; 2. The memory slot is dusty or oxidized. Wash it with a brush. (it will be done without washing with water) 3. Memory is not compatible, try to change the memory. 4. CMOS does not discharge and restore the factory settings, maybe it is normal (the motherboard battery is taken down, and then installed back). 5. The motherboard is not compatible with the CPU, change the CPU.