||Equipment needed: WA-KBR80B 1U Compact Sliding Keyboard Drawer, WN228 22U 800mm Depth Rack-mount Server Cabinet.
1. Mount the sliding tray bracket to the cabinet
2. Install cage nut on all 4 posts
3. Screw the bracket to the cage nut
4. Stretch out the rail first before mounting
5. Mount the rails inside the bracket with three mounting hole
6. Pull the rails first
7. Attach the rails to keyboard drawer on either side
8. Now is fully attached and ready to slide.