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55 Posts

02-24-2016

United States of America

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Re:Best docking station for C940

2021-01-18, 9:46 AM

One thing came to my mind. 

 

Try to install the latest TB3 drivers for Intel NUC. Firmware v: 44.0.

I know I had issues with TB3 also but this was actually first step I did after reading some forums. Completely forgot about it.

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5 Posts

03-29-2020

Germany

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Re:Best docking station for C940

2021-01-18, 9:51 AM
I agree! If a vendor does not test its devices to work with the "gold standard" of accessory ... you might have many customers complaining in case of issues! But the response from Lenovo is most ridiculous!!! "The is C940 is only supported to work with the Lenovo dock" ... I always thought Thunderbolt is an industry standard. In case of Lenovo it is "a proprietary dock connector".
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3 Posts

05-27-2020

United States of America

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Re:Best docking station for C940

2021-01-24, 23:00 PM

Using the power adapter and the TS3+ has fixed the problem for me too. I think that'll have to be good enough for now.

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3 Posts

09-08-2020

Uruguay

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  • Message 54 of 60

Re:Best docking station for C940

2021-02-06, 21:08 PM

Ladies and gentlemen,

 

Finally the solution to this issue is here (quite of). 

 

By updating the bios firmware to the AUCN57WW version you'll be able to connect your dock to your laptop and charge it only with one cable. 

 

I had the AUCN54WW version on my C940-14Il

 

However, I experienced some crashes (BSOD) that I think have to do with LAN drivers. 

 

Hope it helps!

 

https://support.lenovo.com/us/en/downloads/ds541233-bios-update-for-windows-10-64-bit-yoga-c940-14iil

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1 Posts

04-11-2021

United States of America

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  • Message 55 of 60

Re:Best docking station for C940

2021-04-11, 15:55 PM

After loads of research on many websites and reading lots of unfortunate user feedback about their decision to return their Yoga C940 2-in-1 laptops due to this docking/charging issue.  I was so hoping I wouldn’t have to give up on this laptop model/was beating myself up about not having done this specific research prior to purchase...

 

I have good news!  The AUKEY BC MASTER 12-in-1 docking station works!! I can extend my display (to my 2018 LG 24” monitor, ) AND can power/charge my Yoga and the docking station at the same time using the docks Thunderbolt 3 pass thru. There is no glitching or intermittent cutting out. I’ve been using it for a couple weeks and have found it very reliable.  I plug the Yoga USB-C power cord into the dock's 100W PD, then plug the dock into the Yoga's USB-C power port.

 

Note: Before I ever tried to purchase any docking station,  I did the run the update to the BIOS firmware, as recommended in the 2/2021 post by Samago, above:  “By updating the bios firmware to the AUCN57WW version you'll be able to connect your dock to your laptop and charge it only with one cable.”

 

So I never experienced any bad results from other products as this was my first attempt. I purchased my 2020 laptop secondhand from a private party. 

 

I purchased on Amazon for less than $40:  https://www.amazon.com/dp/B08FCGFPVQ?ref=ppx_pop_mob_ap_share

 

Hope this helps!

0AEEF68D-E897-4513-91C0-BA98F437BC6D.jpeg
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160 Posts

04-26-2020

United Kingdom of Great Britain and Northern Ireland

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  • Message 56 of 60

Re:Best docking station for C940

2021-04-11, 18:08 PM

I've had horrendous problems with docks in general and couldn't find anything to support two HDMI outs that just worked.

 

After many many chats with support, it appears that the dock has to be Thunderbolt 3 compatible.

 

It's not a Lenovo issue persay, but there seems to be massive incompatibility issues. I just thought USB3 was USB3 but apparently not it seems. Shame it took so many support contacts to even give me an answer or potential solution.

 

Gonna give this a go as it may eventually sort my issues 18 months after getting the laptop.

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160 Posts

04-26-2020

United Kingdom of Great Britain and Northern Ireland

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  • Message 57 of 60

Re:Best docking station for C940

2021-04-16, 6:46 AM

Quick update. I received the Aukey version of the hub above (it's exactly the same but more expensive?) and it does work with the C940.

 

I've only tested the power passthrough, HDMI out (both ports to monitors 2 & 3 mirrored), USB-C with an external SSD and USB-A (2.0) to a DJ controller and lighting module but it works as it should and automatically connects to the displays even after a reboot.

 

Seems we have a solution.

 

Basically your dock needs to be Thunderbolt 3 certified.

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3 Posts

12-20-2019

United States of America

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  • Message 58 of 60

Re:Best docking station for C940

2021-04-19, 22:48 PM

Can anyone confirm if this Aukey dock will charge a 15" C940 (C940-15IRH)?  Or was this only demonstrated on a 14" model?

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160 Posts

04-26-2020

United Kingdom of Great Britain and Northern Ireland

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  • Message 59 of 60

Re:Best docking station for C940

2021-04-20, 7:29 AM

I tested with the 14" model.

 

As far as I am aware the 15" model cannot be charged with USB C. It's from the power block only as it has a higher voltage requirement than the 14"

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16 Posts

12-20-2019

United States of America

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  • Message 60 of 60

Re:Best docking station for C940

2021-09-14, 19:21 PM

If anyone is still following, I resolved the issues, specifically, to charging on the 15" model. You need, the Thunderbolt 3 Workstation Dock, Gen 2. Very pricey! I had this dock, but could not figure out how to get everything to work. Well!

 

  • Plug the 230w into the 230w inlet on the dock. The dongle that splits the plugs, is useless on the 15". So you don't use it.
  • Plug your 135w, from your laptop, into the 135w inlet on the dock.

Done. 

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