H3C Technologies H3C S5800 Series Switches - Manual (Page 10)

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2. Use a Phillips screwdriver to loosen the mounting screws of the
filler panel on the expansion slot of the switch's front panel and
remove the filler panel, as shown in
Figure 3 .
Keep the removed filler panel properly for future use.
Figure 3 Removing a filler panel
(1) Phillips screwdriver (2) Switch's front panel
(3) Filler panels
3. Unpack the interface card.