Jblk_U1: Base Clock Plus Connector; V-Check Points Lite - MSI MEG Z490 ACE Guide Rapide

JBLK_U1: Base clock Plus connector

You can use this connector to connect an external button. Press the button to increase
the CPU base clock.

V-Check Points Lite

These voltage checkpoints are used to measure the current system voltages. A
multimeter (not included) will be required to check voltages. To measure voltage,
place test leads on the GND (screw mounting hole) and a specific V-Check Point.
Please refer to the manual of your multimeter for more information.
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Overview of Components
JBLK_U1 (Short the jumper to increase
the CPU base clock)
GND
VCCIO
VSA
DRAM
CPU