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527 Posts

07-03-2009

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Thinkpad Ethernet Extension Cable for X1 Extreme

2018-12-22, 18:03 PM

Has anyone ordered and tried the ethernet extension cable (dongle) for the X1 Extreme? I am having difficulty finding the correct part number.

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11 Posts

12-20-2018

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Re: Thinkpad Ethernet Extension Cable for X1 Extreme

2018-12-22, 20:06 PM

It's the older adapter found HERE on Amazon but out of stock.   I found it in stock HERE.

 

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03-01-2019

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Re: Thinkpad Ethernet Extension Cable for X1 Extreme

2019-03-01, 13:14 PM

I just ran into the same thing with the thinkpad X1 extreme...I am somewhat surprised that it doesn't have a normal native RJ45 jack, but I guess that was for the sake of keeping the device thin

 

I ordered a group of X1 carbon, and the extreme as my daily driver, but needed the ethernet jack for doing on-site networking setup

 

since it states there are no drivers needed, I'm assuming it's just a different form factor for the standard jack, I am hoping so

 

I will update when I have it and test it out

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Re: Thinkpad Ethernet Extension Cable for X1 Extreme

2019-03-01, 20:45 PM

I have purchased the Thinkpad Ethernet Extension Cable (dongle) and it works as advertised.

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03-01-2019

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Re: Thinkpad Ethernet Extension Cable for X1 Extreme

2019-03-04, 21:15 PM

mine just came today, and I will confirm, it does work exactly as advertised, plug in, and it acts just like a standard gigabit ethernet jack on any other laptop

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04-27-2019

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Re: Thinkpad Ethernet Extension Cable for X1 Extreme

2019-04-27, 13:29 PM

I ran into this problem too. Lenovo support was remarkably unhelpful, couldn't even provide a link to the product or a part number.

 

The correct part number is 4X90F84315. Both of your links will work. The Amazon link isn't out of stock – it's just not available from Amazon directly, but rather a from few different third-party sellers.

 

I noticed that when checking out with one of the pre-configured X1 Extreme models, there was no option to buy the dongle. When checking with one of the Customize models, there was an option to buy the dongle. Since the pre-configured model was a much better deal than the customized model for the same specs, I didn't want to do the customized checkout.

 

So I started a chat with Lenovo Sales and the guy linked me to a Lenovo USB-C ethernet adapter. Sigh. I explained that I wanted the pure ethernet adapter/cable/dongle and he said that I could only get it if I choose to customize. Sigh again. That's absurd. He didn't have a link or a part number or anything helpful. I had to find it through your thread. I don't think he understood the difference between a USB adapter, which will require drivers and won't maintain a device-specific MAC address, and the pure ethernet dongle, which doesn't require drivers and maintains a device-specific MAC address. I also think the pure ethernet dongle will use less CPU than USB adapter.

 

Lenovo should just include these things for free. It's such a hassle to find them.

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Re: Thinkpad Ethernet Extension Cable for X1 Extreme

2019-04-28, 19:21 PM

Lenovo is too big with too many products to be able to provide adequate service and support.

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4 Posts

04-25-2019

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Re: Thinkpad Ethernet Extension Cable for X1 Extreme

2019-04-28, 19:51 PM

I wound up buying a USB-C to Ethernet Adapter.  That worked fine and I used it once.  I've found that my home office WIFI works fine to connect to my desktop and is plenty fast.

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