<sod>The Data-Doubler installation kit<ref>http://eshop.macsales.com/shop/drive_bracket/datadoubler/</ref> allows customers to add a second 9.5&nbsp;mm or smaller 2.5" SATA [[hard disk drive]] or [[solid state drive]] to the optical drive bay of a Mac mini, MacBook, or MacBook Pro.  The optical drive can then be repurposed as an external drive.<eod>
<sod>The Data-Doubler installation kit<ref>http://eshop.macsales.com/shop/drive_bracket/datadoubler/</ref> allows customers to add a second 2.5" SATA [[hard disk drive]] or [[solid state drive]] to the optical drive bay of a Mac mini, MacBook, or MacBook Pro.  The optical drive can then be repurposed as an external drive.<eod>