3.5" Western digital / Seagate... hard-drives for iMacs 20" 24" 21.5" 27" and Mac pro 3,1 4,1 5,1 in working condition (production date 2009...2014)
This Hard-drive's loaded OS X 10 8 5 . It is fresh-loaded with latest software
With this latest up date Lion or Mountain Lion software the machine will last for several years before being obsolete
Hard-drives in iMacs are compatible, just install, power-on and press the option key so the Mac will recognize the new hard drive
Choose new hard drive to boot up the Mac, enter P/w 12345 and play...
Contact us if you need help after installing it, we're ready to help
***Make sure there is only the new drive in your iMac, "DO not connect" other drive when installing the new drive
***Do not make your mistake, It will destroy your new drive.
Works in Mac pro 3,1 4,1 and 5,1
Will work in mid 2007 to 2009 iMacs 20" and 24", 2009 to 2011 iMacs 21.5", 2009 to 2015 iMacs 27"
Will not work in 21.5" iMac 2012 and Up (these use 2.5" hard-drives or SSD) smaller
***For iMac 2009 and 2010 only "Old hard drive" must be Seagate to match the temperature sensor
If not you have to by pass the temperature sensor to make the fan work right (last picture shows How...)
Check my response from buyers after buying them to up grade their machine
You will not regret when up-grade your loved iMac to newer OS X
30 days free return if not working as described ( buyer pays shipping cost for other reason )
Shipping by USPS small flat rate box to the USA only
Thanks for checking buying and asking questions from us
Have a good day..