NEC Express5800/120Ri-2 User Manual page 292

6.
Insert the hot-swap fan into the slot until it locks.
7.
Change the Redundant fan jumper setting as shown in the figure below.
FRONT
IMPORTANT:
its default position.
8.
Install the components you removed previously.
Standard
Mother board
To avoid system malfunction, leave other jumpers at
Upgrading Your Server 9-67
: Strap
Redundant
configuration
REAR