WCH USB-Enhanced-SERIAL CH9102 driver
Hardware ID USB\VID_1A86&PID_55D4
This chip belongs to the CH340 / CH341 (USB-Serial) family. The family page has the latest drivers and notes on common problems.
- Vendor
- WCH (VID 1A86)
- Device
- USB-Enhanced-SERIAL CH9102 (PID 55D4)
- Bus
- USB
- Drivers
- 1
- Windows
- Windows 10Windows 11
Recommended driver
All drivers for VID_1A86&PID_55D4
| Driver | Version | Date | Windows | Bits |
|---|---|---|---|---|
| WCH CH340 USB-Serial Driver | 2.1.2025.07 | Jul 19, 2025 | Windows 10, 11 | 32-bit & 64-bit, ARM64 |
Is this your device?
- Press Win + X and open Device Manager.
- Right-click the device (usually under Other devices, with a yellow mark), choose Properties and open the Details tab.
- Select Hardware Ids in the list. If the first line starts with
USB\VID_1A86&PID_55D4, the drivers above are for your device.
More about hardware IDs · Fix common device errors
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- USB-HiSpeed-SERIAL-A CH347 55DA
- USB-HiSpeed-SERIAL-A CH347 55DB
- USB-HiSpeed-SERIAL-A CH347 55DD
- USB-HiSpeed-SERIAL-A CH347F 55DE
- USB-Enhanced-SERIAL-A CH9104 55DF
- USB-HiSpeed-SERIAL-A CH339 55E7