The item MS1024AC528 is a memory upgrade for the ACER Aspire X1301, which comes equipped with 1-3 GB of RAM from the factory. The ACER Aspire X1301 can be upgraded to a maximum of 4 GB of RAM. For maximum memory expansion, the device has 2 slots. Sometimes, the manufacturer's specifications regarding maximum memory expansion are outdated and may differ from our information. Why? Because technology progresses 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 and guarantees you continuous availability of upgrades, well beyond the manufacturers' production cycles. Our qualified memory module for the ACER Aspire X1301 operates flawlessly even under full load and fully complies with the manufacturer's specifications. Faster, better through.