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SThomson
What's DOS?
Posts: 1
Registered: ‎06-13-2019
Location: ZA
Views: 195
Message 1 of 3

Two 4 k displays with X280 and USB-C dock

Two indentical 28" 4 K sony displays, but I can only obtain a 4 k display on one Settings.JPG

Its really frustrating and I'm not sure if its a laptop or dock problem

 

Any help would be much appreciated

 

Thanks

 

Stuart

kalahari_surfer
Punch Card
Posts: 8
Registered: ‎11-17-2011
Location: US
Views: 156
Message 2 of 3

Re: Two 4 k displays with X280 and USB-C dock

Check this page if you have USB-C Gen 2 dock  https://pcsupport.lenovo.com/us/en/solutions/pd029622#USB-C%20dock%20Gen%202

 

If you have a different one, check the others.

---------------------------------------------------------
ThinkPad X280 | Intel Core i7-8650U | 12.5" FHD; IPS | 16GB DDR4 2400MHz | 480GB XPG M.2 SSD | Fingerprint | BT | Intel UHD 629 | Win 10 Pro x64
Lenovo Employee CandyZhao
Lenovo Employee
Posts: 10
Registered: ‎06-21-2019
Location: CN
Views: 106
Message 3 of 3

Re: Two 4 k displays with X280 and USB-C dock

Hi SThomson,

 

Not sure your dock is USB-C gen1 dock or USB-C gen2 dock. No matter USB-C gen1 or gen2 dock + X280, can't support two 4k display, it's not system or dock issue. It's work as design.

 

For dock detial resolution, you can check in below page.

https://pcsupport.lenovo.com/us/zh/solutions/pd029622#USB-C dock

 

If your X280 want to support two 4k display, suggest you to buy a Thunderbolt dock, X280 + below two Thunderbolt dock, can support two 4k 30hz display.

ThinkPad Thunderbolt 3 Dock Gen 2 (40AN, 40AN0135XX)

ThinkPad Thunderbolt 3 Dock (40AC, 40AC0135XX)

 

If you have any further question, please let me know.

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