10. Lift the front of the motherboard about 7 cm (3 inches), then slide the motherboard forward until it comes out of the bottom case. HP OmniBook 900 Removal and Replacement 2-21 Standoff, M2 Screw, M2.5×4mm Mylar insulator Bottom case CPU support (OB 900B only) Infrared lens Fan cable Fan Hard drive door Figure 2-11 Screw, M2.5×4 PCMCIA socke Motherboard Screw, M2.5 Right hinge Speak Speak Screw, M2.5×4 mm Screw, M2.5 Right hinge ×8mm support