067b:aaa3 — PL2303x Serial Adapter

This is the USB identifier for a PL2303x Serial Adapter manufactured by Prolific Technology, Inc.. The vendor ID 067b is registered to Prolific Technology, Inc. with the USB Implementers Forum, and aaa3 is the product ID that Prolific Technology, Inc. assigned to this particular model. When you run lsusb on Linux, this device appears as 067b:aaa3 Prolific Technology, Inc. PL2303x Serial Adapter.

Linux

$ lsusb
Bus 001 Device 004: ID 067b:aaa3 Prolific Technology, Inc. PL2303x Serial Adapter

You can filter directly with lsusb -d 067b:aaa3, or get the full descriptor dump with lsusb -v -d 067b:aaa3. Kernel messages from dmesg show the same pair as idVendor=067b, idProduct=aaa3.

Windows

In Device Manager, open the device, go to Details → Hardware Ids. This device reports:

USB\VID_067B&PID_AAA3
USB\VID_067B&PID_AAA3&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_067B&PID_AAA3"

macOS

$ system_profiler SPUSBDataType
    PL2303x Serial Adapter:
      Product ID: 0xaaa3
      Vendor ID: 0x067b  (Prolific Technology, Inc.)

Having driver issues with this device? Most USB devices are handled by a generic class driver; if yours shows up as an unknown device, confirm the ID above first, then check the manufacturer's downloads page.

The exact lines this page is generated from, in the upstream source file:

067b  Prolific Technology, Inc.
	aaa3  PL2303x Serial Adapter

• 067b:3500 Hi-Speed Flash Disk with TruePrint AES3500
• 067b:3507 PL3507 ATAPI6 Bridge
• 067b:aaa0 Prolific Pharos
• 067b:aaa2 PL2303 Serial Adapter (IODATA USB-RSAQ3)

See all 32 devices from Prolific Technology, Inc. →