OptiPlex 5400 Service Manual

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Screw list

NOTE: When removing screws from a component, it is recommended to note the screw type, the quantity of screws, and then place them in a screw storage box. This is to ensure that the correct number of screws and correct screw type is restored when the component is replaced.

NOTE: Some computers have magnetic surfaces. Ensure that the screws are not left attached to such surfaces when replacing a component.

NOTE: Screw color may vary with the configuration ordered.

Table 1. Screw listThe following table provides the different screws that are used in your OptiPlex 5400 All-in-One.
Component	Screw type	Quantity	Screw image
Cable cover—optional	M3x9	1
System-board shield	M3x5	5
Bottom cover	M3x5	4
M.2 2230 solid-state drive	M2x2.5	1
M.2 2280 solid-state drive	M2x2.5	1
System fan	M3x5	3
Wireless-card shield	M2x2.5	2
Wireless card	M2x2.5	1
Camera assembly	M3x5	2
Camera door	M3x5	2
Heat sink—35 W	Captive screws	5
Heat sink—65 W	Captive screws	5
Power-supply unit (PSU)	M3x5	1
PSU fan	M3x5	2
Rear-I/O bracket	M3x5	4
System board	M3x5	9
Speakers	M3 4+7.1xZN	6
Power-button board	M3x5	1
Microphones	M2x2.5	2
Side I/O-board shield	M3x5	2
Side-I/O board	M2.5x3.5	2
Antenna modules	M2x2.5	2
Display panel	M3x5	11 (for touch screen) 12 (for non-touch screen)
Middle frame	M3x5	17
Audio board	M3x5	1