Lenovo ThinkSystem ST650 V2 Setup Manual page 44

Figure 13. System board switches
Table 12. System board switches
SW3 switch block
1
Table 13. SW2 switch block definition
Default
Switch
position
number
8 Off
7
Off
6 On
5 Off
4 Off
3 Off
2 Off
1 Off
ThinkSystem ST650 V2 Setup Guide
36
Description
Trusted Platform
Module (TPM) physical
presence
ME recovery
Low security
Real time clock (RTC)
reset
Password override
Serial function selection
BMC Remote debug
ME security override
SW2 switch block
2
Definition
Changing this switch to the On position indicates a physical
presence to the TPM.
Changing this switch to the On position boots ME to recovery
Keeping this switch in the On position allows transitioning
between signed official IMM builds and IMM test signed builds,
and bypasses CRTM boot check of iMM firmware.
Changing this switch to the On position resets the RTC. A
momentary toggle is all that is required. To avoid excessive
CMOS battery drain, do not leave this switch in the On position.
Changing this switch to the On position overrides the power-on
password.
Off: function as system serial port.
On: dump UEFI debug message to serial port.
Keeping this switch in the off position enables BMC remote
debug.
Changing this switch to the On position disables ME Security
checks.