OptiPlex 3090 Small Form Factor Service Manual

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Screw list

NOTE:When removing screws from a component, it is recommended to note the screw type and 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 depending on the configuration ordered.

Table 1. Screw listThe following table provides the different screws that are used in your OptiPlex 3090 Small Form Factor .
Component	Screw type	Quantity	Screw image
FIO bracket	6-32	2
M.2 2230 solid state drive	M2x3	1
M.2 2280 solid state drive	M2x3 6-32	1 2
WLAN card	M2x3	1
Heatsink and fan assembly	Captive	4
Optional I/O Module	M3x3	2
Power supply unit	6-32	6
System board	6-32 M2x4	8 1