USB\VID_1A86&PID_5512
USB serial adapter driver
USB\VID_1A86&PID_5512 is the QinHeng Electronics CH341 in EPP/MEM/I2C mode, EPP/I2C 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 wch-ic.com.
Device details
| Hardware ID | USB\VID_1A86&PID_5512 |
|---|---|
| Device name | CH341 in EPP/MEM/I2C mode, EPP/I2C adapter |
| Maker | QinHeng Electronics (USB vendor ID 1A86) |
| Device type | USB serial adapter |
| Driver guide | CH340 driver for Windows |
| Latest official package | CH341SER.EXE (CH340/CH341 USB to serial driver) 4.0, June 24, 2026 |
How to install the driver for CH341 in EPP/MEM/I2C mode, EPP/I2C adapter
- 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_1A86&PID_5512. - Try Windows Update. Settings, Windows Update, Advanced options, Optional updates. Some serial chips get their driver here automatically.
- Check your PC maker. Enter your model or serial number on its support site and look under the device or board maker's downloads.
- Use the chip maker's package. CH341SER.EXE (CH340/CH341 USB to serial driver) on wch-ic.com. Our ch340 driver for windows guide explains which package fits.
- Restart and check. Open Ports (COM & LPT) in Device Manager and note the COM number.
Other QinHeng usb serial adapter IDs
Device names: The Linux USB ID list, public data. We never host driver files: downloads come from the maker.