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  • Message 21 of 164

Re: Yoga 720 dock compatibility

2017-07-07, 19:52 PM

The 13" and the 15" have different ports... for the sake of clarity we should specify on this page...

I have the 15" w/ one USB c port.

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181 Posts

04-08-2014

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Re: Yoga 720 dock compatibility

2017-07-07, 20:16 PM

wrote:

I have a 720 and it most definitely has 2 USB C ports. However only one is thunderbolt enabled and supports displayport alt.  The other port does not support video at all and only carries data and power.


Oh ya, sorry, I got focused in on the 15" model and forgot the OP was asking about both 13" and 15". My bad.


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  • Message 23 of 164

Re: Yoga 720 dock compatibility

2017-07-08, 5:44 AM

Hi, could you please try with a 2nd monitor and let us know if it works? Thanks!

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  • Message 24 of 164

Re: Yoga 720 dock compatibility

2017-07-08, 5:47 AM

wrote:

You know, I saw documented that the yoga 720 can only support one external display.. it's definitely not true... I've used the lenovo tb3 dock w it as well as the Toshiba dynadock. Both work w 2 extended displays just fine. TB3 obv. performs better with intensive graphics processing...


Hi, could you please send me a link to the Toshiba Dynadock?

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  • Message 25 of 164

Re: Yoga 720 dock compatibility

2017-07-08, 5:53 AM

I bought this one on jet.com and will try it with my Lenovo Yoga 720 (15) and let you guys know.

 

If it doesn't work, I don't know if I should spend $200+ on a Lenovo TB3 or USB-C dock. I am thinking about using one TB3->HDMI cable + one USB3.0->HDMI cable, to connect to my two 1080p monitors. Do you guys think this setup will work?

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  • Message 26 of 164

Re: Yoga 720 dock compatibility

2017-07-08, 17:19 PM

I have used several USB 3 docks and they do not work well for me. I generally use CAD and 3D heavy software and they produce an inferior video quality (even though display settings say 1920x1080@60hz, mouse/courser moves sluggish and lines are not sharp). For web browsing and even YouTube video might be fine, but forget about gaming or anything very heavy.

 

All USB displays I have found are the same as they use Displaylink Technology and Drivers.

If anybody founds a solution of connecting two additional external monitors 1920x1080@60Hz not using Displaylink equipment, please let us know.

 

Everything I have read says that the USB C 3.1 Alt Mode or Thunderbolt 3 from my Yoga 720 72015IKB only has one DP channel. But I’m hoping that maybe because I do not need 4K outputs, I can connect two 1080p monitors using two Displayports from the Thunderbolt 3 connection.

 

So far, loving my new Yoga 720 but would be disappointed if Lenovo does not allow multiple displays from its Thunderbolt connection, as this laptop hardware is more than capable and they just decided to go cheap on the Thunderbolt 3 (2 lanes instead of 4). Hoping the lack of documentation from Lenovo is the cause of the confusion and that this computer can really handle full Thunderbolt 3 or that they can upgrade via BIOS/Driver updates).

 

If somebody uses Thunderbolt 3 to DUAL HDMI or DP (like the ones from Plugable or StarTech) please let us know. And Thanks.

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05-27-2017

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  • Message 27 of 164

Re: Yoga 720 dock compatibility

2017-07-09, 2:15 AM

2 PCI E lanes should support two 1080p displays.  If you're trying to drive dual 4k, that will be a no go for sure.  

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  • Message 28 of 164

Re: Yoga 720 dock compatibility

2017-07-09, 15:45 PM

If performance isn't up to snuff with the Wavlink dock, I am going to try daisy-chaining since my Dell QHD monitors support it and DP1.2 supports up to dual 2560x1600 diasy-chained from a single output. Not sure which TB3 dock I will purchase to attempt this with, but probably not the Lenovo one since it's $280.   Edit: Now that I've looked at what's available, I might actually get the Lenovo one. The Plugable one looks nice but says it requires two display paths over the TB3 port, though I wonder if it would behave like the Lenovo one and at least 1 DP output would work.

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  • Message 29 of 164

Re: Yoga 720 dock compatibility

2017-07-09, 16:41 PM

wrote:

2 PCI E lanes should support two 1080p displays.  If you're trying to drive dual 4k, that will be a no go for sure.  


I think it's more about the fact that Lenovo configured this machine to have only 1 display path via the TB3 connection. I believe adapters like this for dual HDMI do not work, but it would be nice to get some confirmation from a user (or *gasp* Lenovo themselves!). 

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  • Message 30 of 164

Re: Yoga 720 dock compatibility

2017-07-10, 1:32 AM

https://www.walmart.com/ip/Toshiba-Dynadock-Docking-Station-PA3927U1PRP/161492336?wmlspartner=wlpa&selectedSellerId=3356&adid=22222222228053805126&wmlspartner=wmtlabs&wl0=&wl1=g&wl2=m&wl3=154499370606&wl4=pla-319609190567&wl5=9011787&wl6=&wl7=&wl8=&wl9=pla&wl10=113734355&wl11=online&wl12=161492336&wl13=&veh=sem

 

This one works well for basic usages.. gaming or 3d modeling is not recommended.

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