Table 1. OptiPlex 5490 All-in-One screw list (continued)
Component
Power-button board
Microphones
Side I/O-board shield
Side-I/O board
Antenna modules
Display panel
Middle frame
Audio board
12
Removing and installing components
Screw type
M3x5
M2x2.5
M3x5
M2.5x3.5
M2x2.5
M3x5
M3x5
M3x5
Quantity
1
4
2
2
2
12
17
1
Screw image