---
product_id: 729462325
title: "Lenovo ThinkPad Ethernet Expansion Cable - Network cable - RJ-45 (F) to Lenovo Ethernet extension connector (M) - 7.1 in - for ThinkPad X1 Carbon, X1 Yoga, ThinkPad Yoga 370"
brand: "lenovo"
price: "€ 0.35"
currency: EUR
in_stock: false
url: https://www.desertcart.nl/products/729462325-lenovo-thinkpad-ethernet-expansion-cable-network-cable-rj-45-f
store_origin: NL
region: Netherlands
---

# RJ-45 to Lenovo proprietary connector Designed for ThinkPad X1 Carbon & Yoga series 7.1-inch compact length Lenovo ThinkPad Ethernet Expansion Cable - Network cable - RJ-45 (F) to Lenovo Ethernet extension connector (M) - 7.1 in - for ThinkPad X1 Carbon, X1 Yoga, ThinkPad Yoga 370

**Brand:** lenovo
**Price:** € 0.35
**Availability:** ❌ Out of Stock

## Summary

> 🔗 Stay connected, stay ahead — the ultimate Ethernet upgrade for your ThinkPad.

## Quick Answers

- **What is this?** Lenovo ThinkPad Ethernet Expansion Cable - Network cable - RJ-45 (F) to Lenovo Ethernet extension connector (M) - 7.1 in - for ThinkPad X1 Carbon, X1 Yoga, ThinkPad Yoga 370 by lenovo
- **How much does it cost?** € 0.35 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/729462325-lenovo-thinkpad-ethernet-expansion-cable-network-cable-rj-45-f)

## Best For

- lenovo enthusiasts

## Why This Product

- Trusted lenovo brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Discreet & Durable Build:** Slim profile and Lenovo quality materials blend durability with professional aesthetics.
- • **Reliable Wired Connection:** Bypass Wi-Fi uncertainties with stable, high-speed RJ-45 Ethernet access wherever you work.
- • **Seamless Ethernet Extension:** Effortlessly expand your ThinkPad’s wired network reach with a sleek 7.1-inch cable.
- • **Compact & Lightweight Design:** Weighing just 15g, it’s the perfect travel companion for on-the-go professionals.
- • **Optimized for ThinkPad X1 & Yoga:** Tailored compatibility ensures plug-and-play connectivity with your premium Lenovo devices.

## Overview

The Lenovo ThinkPad Ethernet Expansion Cable is a 7.1-inch RJ-45 (female) to Lenovo Ethernet extension connector (male) cable designed specifically for ThinkPad X1 Carbon, X1 Yoga, and Yoga 370 models. Lightweight and compact, it provides a reliable wired network connection, enhancing your device’s connectivity options with Lenovo’s trusted build quality.

## Description

ThinkPad Ethernet Expansion Cable, RJ-45, 18cm for ThinkPad X1 Carbon

## Features

- Lenovo ThinkPad Ethernet expansion cable – network cable – 45 (F) to RJ-45 Ethernet Extension Connector (M) – 7.1 in – for Lenovo ThinkPad X1 Carbon, ThinkPad Yoga 370, x1 yoga

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Lenovo |
| Manufacturer | hp |
| Product Dimensions | 13.97 x 10.16 x 0.3 cm; 15 g |
| Item model number | 4X90F84315 |
| Is Discontinued By Manufacturer | No |
| Item dimensions W x H | 14 x 10.2 x 0.3 cm |
| Standing screen display size | 16 Inches |
| Computer Memory Type | DDR5 SDRAM |
| Wireless Type | 802.11a |
| Voltage | 240 Volts |
| Are Batteries Included | No |
| Lithium Battery Energy Content | 2.6 British Thermal Units (BTUs) |
| Lithium Battery Packaging | Batteries contained in equipment |
| Lithium Battery Weight | 2 Grams |
| Number Of Lithium Ion Cells | 7 |
| Nombre de cellules Lithium-Métal | 7 |
| Item Weight | 15 g |

## Product Details

- **Brand:** Lenovo
- **Hardware Interface:** Ethernet
- **Compatible Devices:** Desktop
- **Data Transfer Rate:** 5 Gigabits Per Second
- **Item Weight:** 15 Grams
- **UPC:** 888772458034 065030855259
- **Global Trade Identification Number:** 00888772458034, 04053162512672
- **Manufacturer:** hp

## Images

![Lenovo ThinkPad Ethernet Expansion Cable - Network cable - RJ-45 (F) to Lenovo Ethernet extension connector (M) - 7.1 in - for ThinkPad X1 Carbon, X1 Yoga, ThinkPad Yoga 370 - Image 1](https://m.media-amazon.com/images/I/51UZ58O-rwL.jpg)

## Questions & Answers

**Q: Will this work with the new 6th X1 Carbon?**
A: It will absolutely NOT work. The 6th Gen Carbon X1 requires this: 
ThinkPad Ethernet Extension Adapter Gen 2
Part Number: 4X90Q84427
Lenovo has redesigned the port, and older adapters will not fit. Unfortunately, Lenovo does not have them in stock, and other sites, namely CDW, are price gauging. CDW wants $39.00 for it. Lenovo's list price is $29.99. They don't know when the part will be readily available (and thus readily available on Amazon). They are not sure why there is such shortage of these adapters. It's probably due to how new the X1 Carbon Gen 6 is.

**Q: How is this better than a standard usb-c ethernet adapter?**
A: It is made for the proprietary port on the Lenovo ThinkPad X1 Carbon so you would not need to tie up a USB port for the standard USB to ethernet adapter.

**Q: Is it compatible with X1 Carbon 5th generation model 2017?**
A: Yes, I have used this on a 5th gen - the connector is the same.

**Q: will this work on my Carbon X. I had the adapter but lost it...previously i bought the 04X6435.  The connectors look the same but I am not sure.**
A: This is specifically for Thinkpad X1 Carbon.

## Frequently Bought Together

- Lenovo 4X90F84315 ThinkPad Ethernet Extension Cable, Black
- Lenovo ThinkPad USB3.0 to Ethernet Adapter

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-27*