Includes everything needed to replace your optical drive with a second hard drive or SSDBoost your storage capacity by adding up to an additional 1.5TB of internal storage with a second hard drive, or enjoy near-instantaneous boot and app loading times by adding a Solid State Drive (SSD). Configuration flexibility is yours when you replace your 2009-2011 iMac''s internal SuperDrive with an OWC Data Doubler with a hard drive or SSD. The custom-engineered Data Doubler bracket comes ready to mount any 2.5" SATA drive up to 12.5mm in height. Once you''ve installed the entire Data Doubler drive assembly into your 2009-2011 iMac''s optical drive bay, you can customize how you want your internal storage to perform. Drive customization is easy and built right into OS X as the new Data Doubler mounted drive can be setup using Apple''s Disk Utility program in which you can format the drive, create a RAID array using two drives together, or partition the new drive. Once formatted you can also setup the second drive as a Time Machine backup so you can take your backup with your wherever you go. OWC provides free installation videos that guide this DIY upgrade step-by-step for each specific Mac model. Data Doubler also comes backed by OWC''s award-winning U.S.A. based technical support team which is readily available to assist you with your upgrade should you have any questions.