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 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: XiedeModel: DDR2Memory frequency: 533Memory capacity: 1GCompatible: for Compatible computer: Desktop Bandwidth: PC2-4200Voltage: 1.8VPin number: 240pinSize: Approx. 13.4*3*0.4CM/5.28*1.18*0.16inchPackage List:1 * Memory ModuleNote:Memory is divided into DDR, DDR2, DDR3 models. Please refer to the following list to find out what memory your computer has installed and what memory you have to purchase. If you don't know which memory is right for your computer, use a software test to see what memory your computer needs. (In the Baidu search bar, enter: "CPU-Z download" search for a CPU-Z software download, decompress), after running the software, look at the "maximum bandwidth" column of the "SPD" option, you will see "PCxx00", as follows:PC2700 is DDR 333 memoryPC3200 is DDR 400 memoryPC4200 is DDR2 533 memoryPC4300 is DDR2 533 memoryPC5300 is DDR2 667 memoryPC6400 is DDR2 800 memoryPC8500 is DDR3 1066 memoryPC10700 is DDR3 1333 memoryPC12800 is DDR3 1600 memoryIf the memory appears: blue screen, crash, restart, alarm sound