Built-in, booted and going, everything in a correct manner with 3 min work. The RAM was ertkannt perfectly immediately without problems in my P6630 Medion and you immediately notice a significant speed boost. So far, I could not detect any error of memory. The performance index of the store was immediately upgraded from 5.9 to 6.8. So far, I can speak for this product only because I could not make any negative experiences, so I can only recommend this RAM.