For example, as shown in the figure is the number 4,194,304, then put Xxx / 1024/1024, 4194304/1024/1024 =4. " it means the computer can support up to 4GB Memory"! "I do not know if this RAM fit for my computer" OK, please download a program on the website: so you can check your computer and confirm your CPU specification. when a specification of the computer is not the same with our information of our RAM memory, please do not buy this article because it not work properly with your computer. Caution: The imformation of our images is a computer, that we choose to test, is only for reference. For more information about your computer, please see the topic of "CPU" "SPD" "Memory". Sequence: PC2 6400 = DDR2 800MHZ 6 size: 13.3*3cm 100% Color: green Material: PCB Backed by superior design and rigorous testing, this product is engineered for and continuing value. Capacity: 2GB Pins: 240-Pin Voltage:1.8V Form Factor: DIMM Buffering/ECC: Non-ECC, unbuffered Compatible with most major of desktop with CPU. It is the for your / cpu motherboard. "How to check the maximum storage capacity of my computer support?" 1. the taste "" and "R", then the "Run" appears. 2. Enter "cmd". Then a dialog box appears. 3. Continue typing with "wmic memphysical maxcapacity", then "Enter" 4. You can then get the number, the unit KB. Pins of Memory DDR for Desktop=184 pins DDR for Laptop=200 pins DDR2 for Desktop=240 pins DDR2 for Laptop=200 pins DDR3 for Desktop=240 pins DDR3 for Laptop=204 pins Package Contents:1 * Memory RAM Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.