ASROCK H270 Pro4 Manual page 26

Chassis Intrusion Header
(2-pin CI1)
(see p.1, No. 22)
TPM Header
(17-pin TPMS1)
(see p.1, No. 23)
Thunderbolt AIC
Connector
(5-pin TB2)
(see p.1, No. 26)
Thunderbolt AIC Header
(10-pin TB1)
(see p.1, No. 27)
24
1
GND
Signal
1
1
PA_DPSRC_HPD
I2C_MASTER_DATA
I2C_MASTER_CLK
PA_PPS_INT#
GND
1
GND
SLP_S5#
SLP_S3#
CIO Plug Event
Force Power
This motherboard supports
CASE OPEN detection feature
that detects if the chassis cove
has been removed. This feature
requires a chassis with chassis
intrusion detection design.
This connector supports Trusted
Platform Module (TPM) system,
which can securely store keys,
digital certificates, passwords,
and data. A TPM system also
helps enhance network security,
protects digital identities, and
ensures platform integrity.
Please connect a Thunderbolt™
add-in card (AIC) to this
connector via the GPIO cable.
Please connect a Thunderbolt™
add-in card (AIC) to this
connector via the GPIO cable.