Ruijie Networks RG-S2910C-XS-P Series Hardware Installation And Reference Manual page 39

not identified by the host.
The RPS power indicator is
not on.
is in loose contact.
The module is installed after the host is
powered on.
The RPS power module in use is not of
the specified type.
The RPS power supply module is
faulty.
The RPS power supply cable is in
loose contact.
on the host.
Power off, remove and install the module
again.
Replace the RPS power supply module with
one specified by Ruijie Networks.
Replace the RPS power supply.
Check whether the RPS power supply cable is
in loose contact.