
21.Remove the one screw (C) securing the USB board to the lower case.
| Step | Size (Quantity) | Color | Torque | 
| 1 | M2 x L4 (1) | Silver | 1.6  | 
| 
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 | 
 | 
 | 
22.Remove the USB Board from the lower case.
| 94 | Chapter 3 | 

21.Remove the one screw (C) securing the USB board to the lower case.
| Step | Size (Quantity) | Color | Torque | 
| 1 | M2 x L4 (1) | Silver | 1.6  | 
| 
 | 
 | 
 | 
 | 
| 94 | Chapter 3 |