Specification: Item Type: Xiede Memory Module Model: DDR3 Material: PCB Memory Frequency: 1066Mhz Bandwidth: PC3-8500 Voltage: 1.5V Pin Number: 240PIN Applicable Computer: Desktop Note: The memory is divided into memory card, DDR, DDR2, DDR3 models. Please check the following list to know what memory has been installed in your computer and what memory you need to buy. If you don't know which memory is suitable for your computer, please use the software test to see what memory your favorite computer needs. After running the software, look at the "Maximum Bandwidth" column of the "SPD" option, and you will see "PCxx00", as follows: PC2100 is DDR 266 memory 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 The memory DDR, DDR2, and DDR3 are not common to each other, and the sockets are different, and you can't force the overlord to insert it in, so as not to damage the memory and the motherboard, remember! Package List: 1 x Memory Module