2GB PC6400 DDR2-800MHz PC2-6400 240PIN DIMM Memory For AMD Motherboard Desktop PC Backed by superior design and rigorous testing, this product is engineered for long life and continuing value Specification: Capacity: 2GB Pins: 240-Pin Voltage: 1.8V Form Factor: DIMM Speed: PC6400 800MHz Buffering/ECC: Non-ECC, unbuffered Compatible with most major brands of desktop with AMD CPU. It is the best choice for your AMD CPU motherboard. Please note that this item can not work in any Intel chipset motherboard. "How to check the maximum storage capacity of my computer support?" 1. Press the taste "Windows" and "R", then the "Run" appears. 2. Enter "cmd". Then a dialog box appears. 3. Continue typing with "wmic MEMPHYSICAL get MaxCapacity" without the quotation marks, then press "Enter" 4. You can then get the number, the unit KB. For example, as shown in the figure is the number 4,194,304, then put it in this formula. XXX/1024/1024, 4194304/1024/1024 =4. " it means the computer can support up to 4GB Memory"!