There are two 2.5” SSD drive mounting locations in the Three Hundred Two: 
- On the back of the motherboard tray
 - At the bottom of the case
 
 
 To install on the Back of the motherboard tray: 
 
1.  Remove the side panels.
2.  Secure your drive with the 2.5” screws provided
- Your drive will attach on the back of the motherboard tray, with screws affixing from the front of the tray.
 

 
 Note: The motherboard should not be installed when installing your 2.5” device in this location. 
 
To install at the Base of the case: 
 
1.  Remove the left side panel.
2.  Secure your drive to the base of your case with the 2.5” screws provided 
- Align your drive’s holes with the drive bay holes. Secure your drive with the provided 2.5” screws.
 
 
 

                 