Hi I am have installed a lovely new Samsung SSD in my Vostro 240. The PC is fine and working with the new disk.  However the Samsung software suggests the setup is not optimal because I have not set it to run in AHCI mode.  I have tried the BIOS which is A10 American Mega Trends. This is the latest for the PC on the dell website. SSD disks have been around for ages and I'm surprised I cannot run the optimal setup with my system. Any suggestions?