W520 - why only two external monitors? Anyone from Lenovo?

Hi,
    From what I can gather, the W520 does not have "hybrid Optimus" mode and hence can drive only two external monitors, even when connected to the mini-dock.
    Can anyone (from Lenovo?) tell me if this a hardware or software issue?Is an update to change this possible?
    Why did Lenovo make this disappointing choice?

Dan_Falk wrote:
Hi,
From what I can gather, the W520 does not have "hybrid Optimus" mode and hence can drive only two external monitors, even when connected to the mini-dock. Can anyone (from Lenovo?) tell me if this a hardware or software issue?Is an update to change this possible? Why did Lenovo make this disappointing choice?
http://www-307.ibm.com/pc/support/site.wss/MIGR-76767.html and http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=MIGR-76617 don't match.  The first document says 3 of the 5 display connectors on the dock can be used at the same time. In the second document, the W520 is nowhere to be found on the quad display sections. 
Could we get clarification if this is working as designed on the W520 (only 2 connection active from the dock) or a bug and it should do three?
Lenovo?

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