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How many LCD monitor does T430s support without dock?

T430-T490, T530-T590 Series
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ircfas133
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How many LCD monitor does T430s support without dock?

#1 Post by ircfas133 » Thu Oct 25, 2012 10:29 pm

Hello, gents:

How many LCD monitor does T430s support without dock if I want the native LCD on T430s to be on? Thanks!

ZaZ
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Re: How many LCD monitor does T430s support without dock?

#2 Post by ZaZ » Thu Oct 25, 2012 11:44 pm

I believe the Intel HD 4000 supports three LCDs, so you could do two external, via VGA and Displayport, and the internal.
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ircfas133
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Re: How many LCD monitor does T430s support without dock?

#3 Post by ircfas133 » Fri Oct 26, 2012 3:13 pm

May I ask how to plug two monitors. Right now I use the Thunderbolt. But I don't see a HDMI port available. Is it possible without using docking station? Thanks!

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Re: How many LCD monitor does T430s support without dock?

#4 Post by ZaZ » Sat Oct 27, 2012 2:03 am

The T430s gives you a VGA and Displayport connectors. Displayport can be converted to HDMI with a cable. Lenovo also sells a USB 3.0 connector as well.
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ircfas133
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Re: How many LCD monitor does T430s support without dock?

#5 Post by ircfas133 » Sat Oct 27, 2012 3:02 am

ZaZ wrote:The T430s gives you a VGA and Displayport connectors. Displayport can be converted to HDMI with a cable. Lenovo also sells a USB 3.0 connector as well.
Hi, ZaZ:

Will the USB 3.0 external monitor be able to send out high-resolution picture to the external monitor (in the sense that it support the highest resolution of the external LCD/LED)?

I do have a thunderbolt connector and a VGA connector. Now I'm using the Thunderbolt to connect to my HDMI monitor (via a converter). But the VGA one can only output low resolution or fuzzy resolution to the external monitors (resolution is not the highest supported by the external monitor).

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Re: How many LCD monitor does T430s support without dock?

#6 Post by Neil » Sat Oct 27, 2012 8:10 am

What is the native resolution of your external monitor? Lenovo says the T430 supports up to 2048x1536@75Hz on the VGA port. And up to 2560x1600@60Hz on the DisplayPort via optional Mini DP cable and 1920x1200@60Hz with single-link DVI-I via optional Mini DP cable.
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Re: How many LCD monitor does T430s support without dock?

#7 Post by ZaZ » Sat Oct 27, 2012 12:58 pm

According to the specs, the USB 3.0 to DVI connector does a maximum resolution of 2048x1152.
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Re: How many LCD monitor does T430s support without dock?

#8 Post by ircfas133 » Sat Oct 27, 2012 9:42 pm

My external monitor's resolution is 1920*1080. Although Win 7 is able to set the resolution to be this correct resolution if I use the VGA port, I noticed that the fonts and edge is kind of furry. That is, the edge and font is not as sharp as it could be under HDMI mode. May I ask whether this is normal? Thanks.

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Re: How many LCD monitor does T430s support without dock?

#9 Post by lead_org » Tue Nov 20, 2012 9:12 pm

The T430s can support only 2 LCD without Dock.

If you need to support more LCD, then you could consider USB 3.0 dock which would give you extra 2 LCD at up to WUXGA. You can also consider eGPU or use a displayport splitter to support 2 LCD (up to WUXGA of same refresh rate).

Displayport splitter is the cheaper option if you have two of the same LCD that supports displayport connection, also unlike the USB 3.0 dock it doesn't sap CPU processing power.

http://www.thinkscopes.com/lenovo-displ ... -splitter/
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Re: How many LCD monitor does T430s support without dock?

#10 Post by CI_Fellow » Mon May 27, 2019 3:18 am

I have tried Inbuilt Display + Mini DP + VGA without dock not working only works 2 displays at a time.
Any idea about that.
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Re: How many LCD monitor does T430s support without dock?

#11 Post by whqdz » Tue May 28, 2019 4:12 am

Hi,

I'm facing to the same issue, even with a dock. After months of various searchs, it looks like the only t430s that can support 3 monitors is the optimus version.

Only two LCD at a time too. Displayport / HDMI / VGA
With or without dock

Intel HD4000 can support more than 2 screen so I guess it's a lock from Lenovo on the t430s motherboard. Who knows?

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Re: How many LCD monitor does T430s support without dock?

#12 Post by dr_st » Tue May 28, 2019 8:55 am

I haven't had a chance to test it, but looks like I remembered incorrectly and internal+DP+VGA does not work. :(
https://support.lenovo.com/il/en/solutions/ht037605
says "T430s and T430si don't support the “Triple display configuration”. They need two Display Port to configure a triple display setting, therefore a docking station is required."

The requirement that two DisplayPort ports must be used is known, and it's an Intel HD4000 limit. I just thought that it does not affect VGA, but only digital ports. Guess I was wrong.
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