DriverCove

Realtek LAN Adapter Software - 11 (25H2 or Later) Driver 1168.30.50.508/1166.30.50.508

by Lenovo

What you are downloading

This file comes straight from Lenovo's own download server. We do not host it, repack it or change it in any way - the download button takes you to the manufacturer's server, not to a file of ours.

Package
r37el03w.exe, 1.3 MB
Published by
Realtek
Digitally signed
Windows checks this signature before installing
Inside
7 files - the driver itself, its setup instructions and a digital signature file
Show the full list
  • Setup.cmd2 KB
  • rt68cx21x64.cat618 KB
  • rt68cx21x64.inf1.4 MB
  • rt68cx21x64.sys920 KB
  • rt68dcx21x64.cat62 KB
  • rt68dcx21x64.inf537 KB
  • rt68dcx21x64.sys920 KB

Nothing happens on its own: you download the file and decide yourself whether to install it.

Manufacturer
Lenovo
Device
RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet Controller
Driver version
1168.30.50.508/1166.30.50.508
Release date
September 15, 2026
Supported Windows
Windows 11
Architecture
64-bit (x64)
File size
1.3 MB
File name
r37el03w.exe
Digital signature
Signed - catalog rt68cx21x64.cat
INF version
05/08/2026,1168.030.50.0508
INF provider
Realtek
Device class
Net
Source
Lenovo official catalog
Last verified
October 5, 2026
SHA-256
0613801fb508d72ee70fc780320a9376bbca0dd264f148f57055d19270e9de39

Supported devices (1)

Supported hardware IDs (3139)

Compare with your device: Device Manager → right-click the device → Properties → Details → Hardware Ids. If one of the values above matches, this driver supports your hardware.

How to install

Before you start: create a restore point (Start → type "Create a restore point" → Create). It takes a minute and lets you undo everything if the new driver turns out worse than the old one. This driver is made for Windows 11 (64-bit) - if your Windows is different, look for another version further down the page.

  1. Download the file with the button above - it comes directly from Lenovo official catalog.
  2. Double-click the downloaded file and follow the prompts - the installer does the rest.
  3. If it asks to restart the computer, let it.

Check it worked: open Device Manager again. The device should no longer show a warning icon, and its driver version should match the one on this page.

How to roll back

If the device stops working after the update: Device Manager → right-click the device → Properties → Driver tab → Roll Back Driver. If that button is greyed out, use the restore point you made before installing (Start → "Recovery" → Open System Restore).

Other versions of this driver

VersionReleasedSource
1168.27.50.919May 11, 2026Lenovo official catalog