Lenovo ThinkStation P3 Ultra Hardware Maintenance Manual page 84

Attention: Use the screws provided by Lenovo to avoid any unpredictable damage to your
computer.
Step Screw (quantity)
3
M3 x L5 mm, countersunk screw (1)
• Type 4
1. Remove the PCI-Express card and converter.
2. Remove the PCI-Express card from the converter.
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ThinkStation P3 Ultra Hardware Maintenance Manual
Color Torque
Blue Zn 5.0±0.1 in-lbs