Acer Aspire T136 Service Manual page 56

5. Romove the front USB Module.
5-1. Disconnect the front USB/ AUDIO/ LED ASSY cables from the Motherboard.
5-2. Disconnect the front USB/ AUDIO cables from the USB board.
5-3. Release the six claws then remove the front bezel.
Standard Disassembly Process
LED ASSY cable
USB cable
USB Cable
AUDIO cable
AUDIO Cable