System-Board Switches - Lenovo ThinkSystem SD550 V3 System Configuration Manual

System-board switches

The following illustrations show the location of the switches, jumpers, and buttons on the server.
Important:
1. Before you change any switch settings or move any jumpers, turn off the server; then, disconnect all
power cords and external cables. Review the following information:
•
https://pubs.lenovo.com/safety_documentation/
• "Installation Guidelines", "Handling static sensitive devices", and "Power off the server " in User
Guide or Hardware Maintenance Guide.
2. Any system-board switch or jumper block that is not shown in the illustrations in this document are
reserved.
Note: If there is a clear protective sticker on the top of the switch blocks, you must remove and discard it to
access the switches.
Figure 9. System-board switches
SW5
1
SW5 switch block
Table 9. SW5 switch block definition
Switch
Switch name
number
1 Force BMC reset
2 Force BMC CPU reset
ME security override
3
4 Password clear
Low security
5
ME recovery
6
BMC force update
7
FPGA power permission
8
override
ThinkSystem SD550 V3 System Configuration Guide
30
SW13
2
On
Forces hot reset BMC chip
Forces warm XCC and CPU rest
Enables ME low security mode
Forces reset uEFI password
Enables XCC low security mode
Forces ME into recovery mode
Forces XCC boot
Ignores Power Permission and allows
system to power on
Usage description
Normal (default)
Normal (default)
Normal (default)
Normal (default)
Normal (default)
Normal (default)
Normal (default)
Normal (default)
Off