You can remove a serial pass-thru module while
the BladeCenter S system is
powered on. To remove it, disconnect all cables, open the release handle,
and slide the serial pass-thru module out
of the BladeCenter S chassis.
Disconnect all cables from the module.
Open the release handle (rotate the handle down) to disengage the serial pass-thru module.
Slide the module out of the BladeCenter S chassis.