Mount the Samsung 850 PRO SSD
Take out the packet that contains 32 2.5” Drives Screws inside the Accessory Box that came with your Define R5 Case.
There are enough screws to mount 8 2.5” drives.
You would need 4 2.5” Drive Screws to mount the SSD in the drive tray.
Use your #2 Phillips Screwdriver to pick them up and screw them in place.
Make a note of the 4 drive holes on the SSD, and the corresponding drive holes on the tray.
Secure the SSD to the tray using the 4 Drive Screws.
Mount the Samsung 850 PRO SSD in the lower bay as shown.
The drive trays are spring loaded. They snap into place as you push them in.