3 Replies Latest reply: Feb 7, 2013 11:56 AM by rkaufmann87
mp4430 Level 1 Level 1

How many monitors will my late 2009 imac support?


2.8 GHz i7

12 GB ram

ATI Radeon HD 4850 512 MB


I'd like to add 2 Yamakasi Catleap monitors to my setup.  (2560 x 1440 16:9 display)


Can I do it?



iMac, Mac OS X (10.7.5)
  • rkaufmann87 Level 9 Level 9

    In the upper right of this page click Support, then Tech Specs, input the serial number of your iMac and you will find what you need.

  • mp4430 Level 1 Level 1



    It says that it will suppor "a" external display at 2560x1440 resolution.


    Does that mean that it will only support One external display?


    Will it run Two external displays at the 2560 x 1440?

  • rkaufmann87 Level 9 Level 9

    Based on what you have read I would say "a" means one. However I would strongly recommend contacting OWC (OtherWorld Computing at www.macsales.com) to see if they have some other solutions available and if so what they may be. OWC specializes in Macs and what they sell they thoroughly test prior to.


    If you find it necessary you may need to upgrade to a newer Mac that support 2 or more external displays via Thunderbolt. Not cheap but doable.