More installed memory makes OS X, your Applications, everything faster & more efficient while reducing time spent watching those annoying 'spinning beach balls'. Memory is the fast, super easy & user installable upgrade that gives your Mac a night & day boost in performance. Our real-world benchmarks show you what to expect between configs of 512MB and on up to 4.0GB.
All "DIY Kits" include - Drive, Bus-Powered
Portable Enclosure and Tool Kit. The tool kit
enables easy installation of the new drive and
data transfer from the original drive. Continue
using that drive for additional storage and backup. View all DIY Kits up to 2.0TB