USB\VID_067B&PID_AAA3

PL2303x Serial Adapter driver

USB\VID_067B&PID_AAA3 is the Prolific Technology, Inc. PL2303x Serial Adapter, 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 prolific.com.tw.

Download from prolific.com.twFull guide: Prolific PL2303 driver for Windows

Device details

Hardware IDUSB\VID_067B&PID_AAA3
Device namePL2303x Serial Adapter
MakerProlific Technology, Inc. (USB vendor ID 067B)
Device typeUSB serial adapter
Driver guideProlific PL2303 driver for Windows
Latest official packageWindows Driver Installer Setup Program (PL2303 HXD, SA, RA and G-series) 4.10.0.0, July 16, 2026

How to install the driver for PL2303x Serial Adapter

  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_067B&PID_AAA3.
  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. Windows Driver Installer Setup Program (PL2303 HXD, SA, RA and G-series) on prolific.com.tw. Our prolific pl2303 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 Prolific usb serial adapter IDs

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