The item MS4096CO579 is a memory upgrade for the HP/Compaq mpaq Business Desktop dx7500 MicroTower, which comes factory-equipped with 1GB to 8GB of RAM. The HP/Compaq mpaq Business Desktop dx7500 MicroTower can be upgraded to a maximum of 16GB of RAM. For maximum memory expansion, the device has 4 slots. Sometimes, the manufacturer's specifications for maximum memory expansion are outdated and may differ from our information. Why? Because technology advances rapidly, or the revisions from memory manufacturers change so quickly that they can hardly keep up with certification, or older models may not be revalidated at all. This is where Memorysolution steps in with extensive testing to ensure continuous availability of upgrades, well beyond the manufacturers' production cycles. Our qualified memory module for the HP/Compaq mpaq Business Desktop dx7500 MicroTower operates flawlessly even under full load.