User Guide

1-6
• Reset button header (RESET)
The 2-pin header allows you to connect the chassis-mounted reset button. Press the
reset button to reboot the system.
• Chassis intrusion header (CHASSIS)
The 2-pin header allows you to connect the chassis-mounted intrusion detection
sensor or switch. The chassis intrusion sensor or switch sends a high-level signal
to the header when a chassis component is removed or replaced, the signal is then
generated as a chassis intrusion event.
16. Thunderbolt™ (USB4
®
) header
The Thunderbolt™ (USB4
®
) header allows you to connect an add-
on card that supports Intel
®
’s Thunderbolt™ Technology or USB4
®
function.
• The add-on card is purchased separately.
• Please visit the ofcial website of your purchased add-on
card for more details on compatibility.
The add-on card can only be used when installed to the
PCIEX16(G4) slot. Ensure to install your add-on card to the
PCIEX16(G4) slot.
17. Q-LEDs
The Q-LEDs check key components (CPU, DRAM, VGA, and booting devices) during the
motherboard booting process. If an error is found, the critical component’s LED stays lit up
until the problem is solved.
The Q-LEDs provide the most probable cause of an error code as a starting point for
troubleshooting. The actual cause may vary from case to case.
PIN 1
FORCE_PWR
CIO_PLUG_EVENT
SLP_S3# SLP_S5#
GND
RTD3_SW
I2C_SCL I2C_SDA I2C_IRQ# RTD3_POWER_EN NC PERST_N WAKE#
TB(USB4)_HEADER
Chapter 1: Product Introduction