The item MS2048ASU-MB274 is a memory upgrade for ASUS P5KC and P5K SE EPU, which come with 0 MB RAM by default. The ASUS P5KC and P5K SE EPU systems can be upgraded to a maximum of 8 GB RAM. For maximum memory expansion, the device has 4 slots. Sometimes, the manufacturer's specifications regarding maximum memory expansion are outdated and may differ from our information.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 are no longer validated. This is where Memorysolution steps in with extensive testing and guarantees you continuous availability of the upgrade, well beyond the manufacturers' production cycles. Our qualified memory module for ASUS P5KC and P5K SE EPU is fully functional even under full load and absolutely meets the manufacturer's specifications.