H3C Technologies H3C S5800 Series Switches - Manual (Page 11)

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Figure 4 Interface card appearance
(1) Captive screw (2) Ejector lever
4. Gently push the interface card in along the guide rails until the
interface card is in close contact with the switch. (See callout 1
in
Figure 5 .) Then push the ejector levers at both sides inward.
(See callout 2 in Figure 5. )
5. Fasten the captive screws with a Phillips screwdriver to secure the
interface card. (See callout 3 in
Figure 5 .)