1a86:7522 — CH340 serial converter
QinHeng Electronics
- Vendor ID
- 1a86
- Product ID
- 7522
- Combined
- 1a86:7522
- Decimal
- 6790:29986
What is this device?
This is the USB identifier for a CH340 serial converter manufactured by QinHeng Electronics. The vendor ID 1a86 is registered to QinHeng Electronics with the USB Implementers Forum, and 7522 is the product ID that QinHeng Electronics assigned to this particular model. When you run lsusb on Linux, this device appears as 1a86:7522 QinHeng Electronics CH340 serial converter.
How to identify it on your system
Linux
$ lsusb Bus 001 Device 004: ID 1a86:7522 QinHeng Electronics CH340 serial converter
You can filter directly with lsusb -d 1a86:7522, or get the full descriptor dump with lsusb -v -d 1a86:7522. Kernel messages from dmesg show the same pair as idVendor=1a86, idProduct=7522.
Windows
In Device Manager, open the device, go to Details → Hardware Ids. This device reports:
USB\VID_1A86&PID_7522 USB\VID_1A86&PID_7522&REV_0100
From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_1A86&PID_7522"
macOS
$ system_profiler SPUSBDataType
CH340 serial converter:
Product ID: 0x7522
Vendor ID: 0x1a86 (QinHeng Electronics)Driver help
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. QinHeng Electronics official support →
Raw usb.ids entry
The exact lines this page is generated from, in the upstream source file:
1a86 QinHeng Electronics 7522 CH340 serial converter