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Old 03-09-2013, 10:26 PM   #1
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Join Date: Feb 2013
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Exclamation 1 2011 17" MBP and 2 extra displays via 2 usb pluggables?

is this possible...

can i get 2 usb displaylinks and get 2 monitors extra to my macbook pro 17" from late 2011?
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Old 03-25-2013, 04:20 PM   #2
Gavin Olukoju
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Join Date: Mar 2013
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Default One monitor working

I have 2 two identical LG-W2243S-PF (http://www.lg.com/ae/monitors/lg-W2243S-PF-lcd-monitor) monitors attached to my early 2011 17 inch macbook pro running OS X 10.8.3 and only one of the displays works when the machine is booted. I have gone through the article and both of the USB to VGA adaptors have a Product ID = 0x024b in OS X. Is there a fix coming for this?

In addition to this I can tell you that the details for both of the USB to VGA adaptors in the Hardware List for my MacBook Pro are the same with the exception of the Location ID attribute, which is 0xfd120000 / 4 and 0xfa130000 / 6 respectively. The version attribute for the USB to VGA hardware is at 1.11

After some more investigation I at the moment while one monitor works I can switch between them by unplugging the one that is displaying and after a few second the inactive display comes to life. OUt of interest in the OS X display preferences one is titled as W2243 and the other is titled DisplayLink 1. If I change the resolution settings on each monitor unplug then replug the settings for each monitor appear to be remembered.

Last edited by Gavin Olukoju; 03-25-2013 at 05:03 PM. Reason: Added behaviour detail after further investigation
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Old 03-29-2013, 06:17 PM   #3
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Default Works for me

I'm doing exactly that on an early 2011 MBP to produce my current triple 24" monitor setup. I have two identical adapters running my two 'outside' monitors and I have the 'middle/main' monitor attached directly to the ThunderBolt port. There have very few intermittent issues where the screens won't display, but a simple unplug/replug has solved that every time. And I have been using this setup since the first v2.0 Alpha drivers. I've seen great improvement over the updates and am getting ready to install the v2.0 release later today.

Overall, VERY satisfied with the setup and performance.
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