iMac Intel 27" EMC 2309 and 2374 (Late 2009) Hard Drive Enclosures
Parts that work with iMac Intel 27" EMC 2309 and 2374 (Late 2009):
12.7 mm SATA Optical Bay SATA Hard Drive Enclosure
Increase the storage space in your computer by replacing the optical drive with a second SATA hard drive or SSD.
In October 2009, Apple unveiled the new 27" iMac. Externally, the machine features edge-to-edge glass and an aluminum rear bezel. Internally, an LED display, 4 RAM slots (to upgrade to a maximum of 16 GB RAM), more powerful video processing, and faster processors.
Additionally, the 27" iMacs have the build-to-order option of a Quad Core i5 or i7 processors to give you the most powerful iMac experience yet!