HP ProBook 6545b, 6540b, 6445b and 6440b Notebook PC's - Maintenance and Service Guide

Screw listing
Maintenance and Service Guide 7–7
Phillips PM2.0×3.0 screw
Where used: 3 screws that secure the optical drive bracket to the optical drive
Where used: 3 screws that secure the switch cover to the computer
Color Quantity Length Thread Head diameter
Black 23 on computer
models equipped with
a 15.6-in display,
21 on computer
models equipped with
a 14.0-in display
3.0 mm 2.0 mm 4.5 mm