H3C UniServer R6700 G3, Руководство пользователя

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9-10
(15) Front drive backplane AUX connector 2 (16) Front drive backplane power connector 3
(17) Front drive backplane AUX connector 3 (18) Rear drive backplane power connector
(19) Chassis-open alarm module, front VGA, and USB 2.0 connector
(20) Rear drive backplane AUX connector
(21) Dual internal USB 3.0 connectors
(22) PCIe riser connector 4 (23) Processor mezzanine board connector
(24) PCIe riser connector 3 (25) Dual SD card extended module connector
(26) PCIe riser connector 2
System maintenance switches
Use the system maintenance switches as shown in Figure 9-8 , if you forget HDM username, HDM
password, or BIOS password, or need to restore default BIOS settings, as described in Table 9-7 . To
identify the location of the switches on the system board, see Figure 9-7 .
Figure 9-8 System maintenance switches
To use the system maintenance switches, remove the riser card support bracket installed over the
switches.
Table 9-7 System maintenance switches
Item Description Remarks
Switch 1
•
OFF (default)
—HDM login requires
the username and password of a
valid HDM user account.
•
ON
—HDM login requires the default
username and password.
For security purposes, turn off the switch after
you complete tasks with the default username
and password as a best practice.
Switch 5
•
OFF (default)
—Normal server
startup.
•
ON
—Restores the default BIOS
settings.
To restore the default BIOS settings, turn on
and then turn off the switch. The server starts
up with the default BIOS settings at the next
startup.
CAUTION:
The server cannot start up when the switch is
turned on.