Older versions (from 2017–2019) are known for memory leaks. Here’s how to get the latest signed driver:
Alternatively, let Windows Update handle it: qc1110-x64.exe windows 10
qc1110-x64.exe is a legitimate driver utility component for USB-to-Ethernet adapters based on the Realtek / QEMU QC1110 chipset. The "x64" in the name indicates it is compiled for 64-bit versions of Windows 10 (which covers most modern PCs). Older versions (from 2017–2019) are known for memory leaks
Despite the "QC" prefix (which sometimes stands for QuickChip or Qualcomm-related legacy naming), these drivers are most commonly associated with: Alternatively, let Windows Update handle it: qc1110-x64
In short: if you own a small USB dongle that adds an Ethernet port to your laptop or desktop, this process is the software that makes it work.
Sometimes the process spikes to 15–30% CPU for no reason. This is often a driver conflict with power management settings.
Fix: Go to Device Manager → Network adapters → Right-click your USB Ethernet device → Properties → Power Management → Uncheck "Allow the computer to turn off this device to save power".