betaEncoder
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@@ -57,7 +57,11 @@ If you want to leave the bootloader, you may send the following bytes at 57600 b
 
 [Zadig](https://zadig.akeo.ie/) is the recommended tool to install drivers in Windows. The bootloader (4348,55E0) should be installed with WinUSB or libusb-win32 driver.
 
-You can use USB Serial (CDC) driver for default CDC USB stack. If you tried to emulate another type of USB device without changing the PID/VID, you may need to uninstall the device before installing a new driver.
+![Zadig CDC image](https://raw.githubusercontent.com/DeqingSun/ch55xduino/ch55xduino/docs/Zadig_CDC.png)
+
+You can use USB Serial (CDC) driver for the default CDC USB stack (1209,C550). 
+
+If you tried to emulate another type of USB device without changing the PID/VID, you may need to uninstall the device before installing a new driver.
 
 ### Permission for Linux