The item MS8192MSI-MB122 is a memory upgrade for the MSI H170A, which comes with 4 GB of RAM by default. The MSI H170A system can be upgraded to a maximum of 64 GB 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 Sometimes, the manufacturer's specifications for maximum memory expansion are outdated and may differ from our information.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 is advancing rapidly, or the revisions from memory manufacturers change so quickly that they can hardly keep up with certification, and 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 MSI H170A operates flawlessly even under full load and fully complies with the manufacturer's specifications. Faster, better through memory upgrade.