Ruijie Networks RG-N18014 Hardware Installation And Reference Manual page 107

Hold down the button on the lever (1 in figure 3-28) and then pull out the lever (2 in figure 3-28).
Figure 3-28 Pulling out the Lever
Figure 3-29 Pulling out the Levers with Both Hands
(2) Install modules into slots (RG-N18014)
1) Pull out both levers
2) Insert the module into the slot along the slide rail and drive it ahead smoothly
3) Push both levers toward the slot
Figure 3-30 RG-N18014 Chassis
(① in figure 3-30).
(③ in figure 3-30).
(② in figure 3-30).