NEC Server 140Rc-4 - Manual (Page 324)

9-38 Upgrading Your Server
5. Push the tab to unlock it, slowly open the tab, then remove the PCI board.
IMPORTANT: Do not open the retention tab to 90 degrees or more.
Doing so could damage the tab.
NOTE: The insulators are installed between the PCI board slots.
They are for protecting the PCI board already been installed. Take care
not to remove or damage the insulator when installing or removing the
PCI board. If the insulator is taken off, reinstall the insulator in place.
6. Install the dust cover and expansion slot cover on the slot from which you remove the PCI
board, then slowly close the tab.
NOTE: Confirm that the PCI Slot Power lamp blinks once, and that
the PCI Slot Fault lamp is off. If the PCI Slot Fault lamp is on, open
and close the tab again.
IMPORTANT: To maintain the dust-proofing and electromagnetic
radiation characteristics and cooling performance of the server, be sure
to install the dust cover and the expansion slot cover on the slot from
which you removed the PCI board.
7. Reinstall the rear access cover and place the server into the rack.
Tab
Lock (for long card)