iMac Intel 21.5" EMC 2389 (Mid 2010) Hard Drive Enclosures
Parts that work with iMac Intel 21.5" EMC 2389 (Mid 2010):
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 July 2010, Apple upgraded the 21.5" 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 featuring Core i3 and i5 processors.