Have you ever wished you could put an SSD or second HDD in your laptop, because you are feeling that the boot times & data access becomes more & more slowly or you have realized that you have far too much data to fit on your first regular HDD inside your laptop? By putting an IB-AC642 in your optical bay, you can add a SSD or second hard drive to your computer. Adding a solid state drive to your system can make it significantly faster, from decimating the boot times to speeding up application launch & data access or storing all of your large files on the second regular hard drive. Laptops rarely have a second HDD bay though. Fortunately, with an IB-AC642, you can add a second drive to your computer easily. With flash drives, online streaming video, & downloadable software installs becoming more popular, many users find themselves using the CD/DVD drive less & less, so replacing it with an SSD or second HDD can be a good investment. Furthermore, in the rare cases that you do need access to optical media; you can always plug in your old DVD drive externally by using the enclosed external.