Laptop charging from Omen Accelerator to ThinkPad T14S
 
Notifications
Clear all

Laptop charging from Omen Accelerator to ThinkPad T14S  

  RSS

Eric Richardson
(@eric_richardson)
New Member
Joined: 2 weeks ago
 

Hey all, 

 

I have a Omen Accelerator with a GTX 970 coupled with a Thinkpad T14S.  I do exactly zero gaming and use five monitors for work, hence the setup. 

One of the goals I had was to have everything going through TD3, including charging.  My understanding is that the Omen Accelerator can output 100 watts via TD3 output, which should be more than enough to charge this little laptop. 

Anyways, setting up the Accelerator on the Thinkpad was a nightmare due to the default TD3 security settings in the BIOS, default security settings in Windows and Lenovo's own proprietary software.  I got it working after much profanity. 

I assume this is some stupid setting within Windows or Lenovo's own software suite preventing this - "Only allow charging via certified chargers" or some other similar BS.  I however cannot find this to save my life. 

Does anyone have an idea as to how I could go about finding this setting, or better search terms in Google? 

Thanks in advance for your expertise. 

Best,

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

.

ReplyQuote
joevt
(@joevt)
Noble Member
Joined: 4 years ago
 

@eric_richardson, where does it say in the Thinkpad T14S (Intel) specs that its Thunderbolt port supports power input? The laptop has a separate USB-C port for power input.

The specs say the Thunderbolt 3 port supports power delivery but it doesn't say if that's input or output or both or what Voltage/Current modes it supports.

I wonder if the USB-C port for power input can support getting power from the Omen Accelerator? It probably uses USB-C power delivery spec so it might work but you can't use the eGPU that way.

 

Mac mini (2018), Mac Pro (Early 2008), MacBook Pro (Retina, 15-inch, Mid 2015), GA-Z170X-Gaming 7, Sapphire Pulse Radeon RX 580 8GB GDDR5, Sonnet Echo Express III-D, Trebleet Thunderbolt 3 to NVMe M.2 case


ReplyQuote
Eric Richardson
(@eric_richardson)
New Member
Joined: 2 weeks ago
 
Posted by: @joevt

@eric_richardson, where does it say in the Thinkpad T14S (Intel) specs that its Thunderbolt port supports power input? The laptop has a separate USB-C port for power input.

The specs say the Thunderbolt 3 port supports power delivery but it doesn't say if that's input or output or both or what Voltage/Current modes it supports.

I wonder if the USB-C port for power input can support getting power from the Omen Accelerator? It probably uses USB-C power delivery spec so it might work but you can't use the eGPU that way.

 

Thanks for your reply.  I've spent some time at the Lenovo forums and it seems that either this is a universal misunderstanding with how the T-Series of ThinkPad is marketed or its a firmware issue that Lenovo cannot be bothered to fix. Many people with all eGPUs (including the one from Lenovo) and Lenovo T series laptops are having the same problem.

I can use either the USB-C or TD3 coupled with the factory charger to charge the device - charging through TD3 isn't the problem, its charging through TD3 via the eGPU is what won't work. Given this it seems like a firmware issue Lenovo either doesn't want to fix or the userbase that uses eGPUs with these laptops is such a tiny minority of users - they don't see it as important. 

Either way, with two cables - it works great. 

Thanks for your help!  

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

.

ReplyQuote