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Lenovo

Lenovo 4X90F84315 ThinkPad Ethernet Extension Cable, Black

  • Based on 775 reviews
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Availability: Only 3 left in stock, order soon!
Fulfilled by Amazon
Arrives Sunday, Sep 14
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Features

  • Designed For: ThinkPad L380; L380 Yoga; X1 Carbon (2nd Gen) 20A7, 20A8; X1 Carbon (3rd Gen) 20BS, 20BT; X1 Extreme (2nd Gen) 20QV, 20QW; X380 Yoga; ThinkPad Yoga 370
  • Small form factor, easy to take
  • Support PXE boot and vPro for ThinkPad X1 Carbon
  • Enable Ethernet connection for ThinkPad X1 Carbon

Description

ThinkPad Ethernet extension cable is the unique Ethernet cable for ThinkPad X1 Carbon, to enable Ethernet connection, support PXE and vPro. With small form factor and 80mm cable length, easy to take and portable. No need drive, plug and use. This cable is fully qualified on ThinkPad X1 Carbon.


Brand: Lenovo


Connector Type: Component


Cable Type: Network cable


Compatible Devices: Personal Computer


Recommended Uses For Product: Indoor/Outdoor


Color: black


Connector Gender: Female-to-Male


Unit Count: 1 Count


Item Weight: 15 Grams


Model Name: 4X90F84315


Specification Met: No


Number of Items: 1


Product Dimensions: 5.5 x 4 x 0.12 inches


Item Weight: 0.529 ounces


Item model number: 4X90F84315


Batteries: 1 Unknown batteries required.


Is Discontinued By Manufacturer: No


Date First Available: June 20, 2014


Manufacturer: Lenovo


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Sep 14

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Gigabit... Here I come!
Review Image by An Honest Reviewer An Honest Reviewer
Review Image by An Honest Reviewer An Honest Reviewer
Review Image by An Honest Reviewer An Honest Reviewer
Review Image by An Honest Reviewer An Honest Reviewer
Review Image by An Honest Reviewer An Honest Reviewer
So I recently got Fios Gigabit and I was trying to test it on a bunch of other USB (both A&C) 3.0 Ethernet adapters. None of my laptops were ever able to show true gigabit speeds with those adapters. So I suspected it was the either the NIC or the drivers causing the reduced speeds (450 Mbps) since my WiFi (Synology) put out 550~600 Mbps on AC wifi, but I couldn't be sure until I got this adapter. I was so happy to see that my laptop was able to pull almost 940 Mbps with Ookla (speedtest.net) and 1 Gbps on Fast.com. A side note: I've noticed a bunch of negative reviews about this product from people trying to plug it into various ports it's not intended for. I attached the icon the port has as well as a picture of the port. I hope it helps clear up the confusion. I used it on my Lenovo X1 Extreme Gen 1. ... show more
Reviewed in the United States on July 31, 2020 by An Honest Reviewer An Honest Reviewer
    • DOES support gigabit throughput (1Gbps) despite what some reviewers (mis)state
Wandered here to look up the part no. of this dongle. Despite what *some* reviewer(s) are saying, this dongle does provide gigabit speed (just tested/confirmed). I usually work and connect through a thunderbolt 3 dock, so this dongle rarely gets used. Needed to quick check the quality of a new cat8 cable: 1Gbps google fiber > cat 8 + dongle > X1 Yoga 3rd gen == 530-550Mbps down, 400 - 430 up consistently, in a home with multiple (min 12 devices connected simul) AND while my partner was on a mult-person zoom meeting over wifi. I just wish it were multi-gig-capable. ... show more
Reviewed in the United States on October 14, 2021 by Today's Tom Sawyer
    • Buena compra
Funciona correctamente para conectar internet por cable y también funciona correctamente para iniciar sistema desde servidor.
Reviewed in the United States on May 11, 2022 by jorged
    • Exactly what I was looking for
Bought myself a new laptop, and had to pick this up since this is the only network port on it. I do have a USB connector for a network cable, but it didn’t work on this laptop. This is what I needed. It is a very distinct looking plug, and it’s not USB-C. If you have a weird-looking spot with the network symbol on it (one side is slightly rounded, rest is straight, and is about the size of USB-C), this is what you need. If not, just get a USB adapter - it’s cheaper anyway. ... show more
Reviewed in the United States on December 19, 2020 by Meredith
    • Well Constructed - Did Not Fit X1 Carbon 7th Gen
This review is for the "Lenovo 4X90F84315 ThinkPad Ethernet Extension Cable, Black". Out of all the Ethernet adapter cable dongles that are supposed to work with ThinkPad laptops, I chose this one to order. Unfortunately it did not fit my ThinkPad X1 Carbon 7th Gen computer. The connector on the laptop end is incorrect. The adapter cable, though, seems to be well constructed and would be a great cable for those laptops for which it is designed. ... show more
Reviewed in the United States on August 2, 2020 by Prime Buyer
    • Works with Lenovo X380 Yoga. Make sure you have the right port on your laptop
Review Image by JBoi JBoi
Review Image by JBoi JBoi
Review Image by JBoi JBoi
This adapter works great with the Lenovo X380 Yoga. It connects at 1 Gbps without issue. It was ready to go out of the box, with Windows 10, without any extra drivers. There seems to be a lot of confusion about the type of port that is needed for this dongle. I don't know if it's proprietary to Lenovo, but I've never seen this type of connector before. The owners manual calls this "Mini Ethernet connector" Note: This will not fit any USB port (including USB-C, there's a different adapter for that). This will not fit a mini-display port, nor will it fit a micro HDMI port (even though they are about the same size). The port this will fit has the same logo you see in the picture, which is actually the IT symbol for LAN (three squares connected to a horizontal line) ... show more
Reviewed in the United States on August 20, 2018 by JBoi JBoi
    • Not compatible with x1 carbon 7th gen (or newer I assume)
I can't speak to how well it works on the older generations, but it certainly is not compatible with the X1 carbon 7th gen... Too bad I didn't actually try it while I could return it, and thankfully I had a standard USB one hidden in my backpack when I needed it... Why am I rating it 3 stars then? Because when you search for the 7th gen version, amazon leads you here and the picture doesn't show the connector well enough for someone to not be positive to validate - those are worth it to me to actually rate it when the problem is more of a user error, than a part error. ... show more
Reviewed in the United States on October 31, 2019 by Blah Blah
    • It is NOT capable of Gigabit speeds
I have this adapter for my X1 Carbon (5th gen) and it is NOT a Gigabit capable. Its max speed is 100Mbps. It is not better than a standard USB-C to Ethernet adapter (most of those are capable of running at Gigabit speeds). That being said I'm currently using a USB3 to Gigabit Ethernet adapter instead. ... show more
Reviewed in the United States on February 23, 2021 by Michael

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