
Component identification 9
Item Description
10
Enclosure connector
11
MicroSD card connector
12
FlexibleLOM connectors (2)
13
Processor socket 1 (populated)
14
Processor 2 DIMM slots
15
Internal USB connector
16
TPM connector
The symbols correspond to the symbols located on the interconnect bays. For more information, see the
HP ProLiant BL420c Gen8 Server Blade Installation Instructions on the HP website (http://www.hp.com/support).
System maintenance switch
Position Default Function
S1
Off Off = iLO security is enabled.
On = iLO security is disabled.
S2
Off Off = System configuration can be
changed.
On = System configuration is locked.
S3
Off Reserved
S4
Off Reserved
S5
Off Off = Power-on password is enabled.
On = Power-on password is disabled.
S6
Off Off = No function
On = ROM reads system configuration
as invalid.
S7
— Reserved
S8
— Reserved
S9
— Reserved
S10
S11
— Reserved
S12
— Reserved
To access redundant ROM, set S1, S5, and S6 to on.
When the system maintenance switch position 6 is set to the On position, the system is prepared to erase all
system configuration settings from both CMOS and NVRAM.
CAUTION: Clearing CMOS and/or NVRAM deletes configuration information. Be sure to
properly configure the server or data loss could occur.
Mezzanine connector definitions
A PCIe x8 mezzanine connector supports x16 cards at up to x8 speeds.
Item PCIe
Mezzanine connector 1
x8, Type A mezzanine card only
Mezzanine connector 2
x16, Type A or B mezzanine card
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