HP Pavilion dv6500 - Connector Pin Assignments; Audio-in (Microphone) Pinout; Audio-out (Headphone) Pinout

Phillips PM2.5×5.0 captive screw
Color Quantity Length Thread Head width
Black 3 5.0 mm 2.5 mm 5.0 mm
Where used: 3 screws that secure the fan/heat sink to the computer
Phillips PM2.5×5.0 captive screw 113