[ltp] Experience with ThinkPad ethernet extension adapter?

[Juanjo Costa]

Hi Stefan,

First of all, I do not own an X1 nor that dongle (and so you may discard 
the following response accordingly :)...


On 2/22/24 16:57, Stefan Monnier wrote:
> I recently got an X1 Carbon (gen5) and I see it doesn't have a real
> ethernet port, instead it has a funny port for ethernet that requires an
> external adapter.
> 
> On Lenovo's site I see a "ThinkPad Ethernet Extension Adapter Gen 2"
> which seems to serve that purpose, so I get the impression that it's not
> quite for the same connector, so maybe my laptop requires a "gen1" of
> that adapter.
> 

I think you are right, and it seems it will not work. At least here [1] 
it describes the product you mention, and specifically it states it 
requires "ThinkPad X1 Carbon (6th)". On the other hand, here [2] it 
describes another product which requires your specific model (the 
adapters seem different).

[1] ThinkPad Ethernet Extension Adapter Gen 2. 
<https://www.lenovo.com/us/en/p/accessories-and-software/cables-and-adapters/cables-and-adapters_adapters/4x90q84427>
[2] ThinkPad Ethernet Extension Cable. 
<https://support.lenovo.com/us/en/accessories/pd031644-thinkpad-ethernet-extension-cable-overview-and-service-parts>

> Also in my searches I saw some vague mentions of 100Mb/s which would be
> rather disappointing.
> 

At least on [1] states 1000mbps in the Question&Answer, and I agree with 
you that any other option would be disappointing.


> In any case, the price I see for those kinds of adapters isn't
> particularly attractive compared to USB<->Ethernet adapters.
> 

Somewhere in [1] in the Question&Answers section explain a little bit 
about the difference... stating that it has its own controller instead 
of sharing the usb one.

> Do you know of a good place to find them?

not tried

> Good technical info about such adapters?

The lenovo support web seems quite lacking ...

> Experience using them?

At least, I have tried a usb adapter myself, and they work quite decently.


Regards, hoping somebody else with a real thing could answer.
Juanjo

> 
> 
>          Stefan
>