USB\VID_10C4&PID_80A9

CP210x to UART Bridge Controller driver

USB\VID_10C4&PID_80A9 is the Silicon Labs CP210x to UART Bridge Controller, an USB serial adapter device. It turns USB into a serial COM port. Without the chip driver no COM port appears. Get it from Windows Update or your PC maker first; the chip maker's own package is on silabs.com.

Download from silabs.comFull guide: CP210x driver for Windows

Device details

Hardware IDUSB\VID_10C4&PID_80A9
Device nameCP210x to UART Bridge Controller
MakerSilicon Labs (USB vendor ID 10C4)
Device typeUSB serial adapter
Driver guideCP210x driver for Windows
Latest official packageCP210x Universal Windows Driver 11.6.0, October 2, 2026

How to install the driver for CP210x to UART Bridge Controller

  1. Confirm the ID. In Device Manager, right-click the device, open Properties, then Details, and pick Hardware Ids. The first line should start with USB\VID_10C4&PID_80A9.
  2. Try Windows Update. Settings, Windows Update, Advanced options, Optional updates. Some serial chips get their driver here automatically.
  3. Check your PC maker. Enter your model or serial number on its support site and look under the device or board maker's downloads.
  4. Use the chip maker's package. CP210x Universal Windows Driver on silabs.com. Our cp210x driver for windows guide explains which package fits.
  5. Restart and check. Open Ports (COM & LPT) in Device Manager and note the COM number.

Other Silicon Labs usb serial adapter IDs

Device names: The Linux USB ID list, public data. We never host driver files: downloads come from the maker.