Identification Of Servers ~ Uid Switch - NEC Express5800/120Rd-2 Service Manual

Identification of Servers ~ UID Switch ~

An "UID (unit ID) lamp" is provided on the front panel and rear panel. If more than one server
is mounted in a single rack, the lamp identifies the server you are maintaining.
The UID lamp goes on when the UID (unit ID) switch on the front panel is pressed. It goes off
when the switch is pressed again.
Maintenance from the rear of the rack has to be carried out in a dark, narrow space. The
interface cable of a server or power supply unit in normal state may be disconnected by accident
in this situation. To prevent this problem, you should start maintenance after confirming the
target server by using the UID switch.
UID lamp
UID switch
UID lamp (Visible through the clearance between
the frame and the lamp on the system board)
System Overview 1-39