User Service Guide, Fifth Edition - HP 9000 rp4410/4440

3. Select an empty slot and pull up on the MRL located on the OLX divider approximately 75
degrees.
CAUTION: Do not pull up on the MRL of a powered on, occupied slot or your system will
crash.
Figure 6-27 PCI/PCI-X OLX Divider Layout
Figure 6-28 PCI-X Card Latch Opening Sequence
186 Removing and Replacing Components