MSI MEG Z590 ACE - Booting Jumpers and Controller Connectors; Slow & Low Temp Booting Jumpers

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Overview of Components
JSLOW1: Slow Mode Booting Jumper
This jumper is used for LN2 cooling solution, that provides the extreme overclocking
conditions, to boot at a stable processor frequency and to prevent the system from
crashing.
Normal
(Default)
Enabled
(Please enable this jumper
during BIOS POST.)
Enabled
(Please enable this jumper
during BIOS POST.)
Normal
(Default)
⚠
Important
∙ Users will try extreme low temperature overclocking at their own risks. The
overclocking results will vary according to the CPU version.
∙ Please don’t set to Enabled when power-off or the system will be un-bootable.
JLN1~2: Low Temperature Booting Jumper
This jumper is used for liquid nitrogen cooling system to boot at an extreme low
temperature. Try to set it Enabled to increase the boot success rate.