Memory installed without problem on my PC Toshiba Satellite P500. Hardware supported by the system and allowed another increase in memory of 4 to 8GB and significantly improve the data transfer rate to the hard disk before performance Windows 5.4, from 5.9. Article delivered on July 31, so one day soon that announced the order. Very satisfied with my purchase, despite its price a bit high compared to what you can find elsewhere, but at least no compatibility issues.