Joc_Fs1: Safe Boot Jumper; Joc_Rt1: Oc Retry Jumper; Jtbt1: Thunderbolt Add-On Card Connector - MSI MEG Z590 UNIFY Quick Start Manual

JOC_FS1: Safe Boot Jumper

This jumper is used for Safe Boot. Once enabled, the system will boot with default
settings and lower PCIe (from CPU) mode.

JOC_RT1: OC Retry Jumper

This jumper is used for retrying OC. Once set this jumper to short, the system will
keep retrying OC items until it boot up successfully.

JTBT1: Thunderbolt Add-on Card Connector

This connector allows you to connect the add-on Thunderbolt I/O card.
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Overview of Components
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Normal
(default)
Boot with the saved
BIOS settings.
JOC_RT1
1 TBT_Force_PWR
3 TBT_CIO_Plug_Event#
5
7
9
11
13 TBT_RTD3_PWR_EN
15 TBT_Card_DET_R#
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Apply the BIOS default
settings and lower PCIe
(from CPU) mode for
Normal
(default)
2 16
1
15
2
4
SLP_S3#_TBT 6
SLP_S5#_TBT 8
Ground 10
DG_PEWake 12
14
16
Enabled
Safe Boot
Short
(Retry OC)
TBT_S0IX_Entry_REQ
TBT_S0IX_Entry_ACK
TBT_PSON_Override_N
No pin
SMBCLK_VSB
SMBDATA_VSB
Ground
PD_IRQ#