JHCTech KMDA-3201 User Manual page 35

User's Manual
Step 3: Unscrew 2 screws on the subcard(ECB-148) and remove the subcard;
Step 4: Unscrew 2 screws on the dongle bracket and remove the dongle bracket;
Step 5: Unscrew 2 copper columns on the built-in USB, remove the USB cable from the motherboard and
remove the built-in USB;
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