The Data Doubler SSD/2.5" (64mm) Hard Drive Installation Kit for Mac mini from OWC/Other World Computing enables you to add a second internal 2.5" (64mm) SATA hard drive or a high-performance Solid State Drive (SSD) to complement your existing internal factory drive. The installation kit comes with a 5-piece mini toolkit, a logic board removal tool for Mac mini 2011/2012, four rubber grommets, four hex screws and a Mac mini flex cable. It supports Mac mini 2011 and 2012 models.This kit helps you when you are running out of storage space in your Mac mini and also improves performance. It is supplied with all required parts, tools and a step-by-step installation video. With data transfer rates of up to 559 Mb/s, it allows you to enjoy instantaneous booting and application launches that boost overall system and application performance.