EVGA Z370 FTW User Manual page 20

EVGA Z370 FTW (134-KS-E377)
connector. Modern motherboards push most of the audio data through the
bus, and no longer require an external cable. NOTE: This is an S/PDIF Out
connector, and cannot operate to record data from an external device.
22. Front Panel Connectors
The Front Panel Connectors are the four main chassis connections. These
include the Power Switch, Power LED, Reset Switch, and HDD LED. The
Power and Reset switches are "Momentary Switches," rather than "Latching
Switches," which means the connection between two posts only needs a brief
moment to turn on the device, as opposed to requiring a constant connection.
For example, the Power and Reset switches can be triggered instantly with a
screwdriver by simultaneously touching the + and - posts.
The Power LED will power on with the system, indicating the system is on and
can blink in conjunction with CPU activity.
HDD LED will blink during access to the SATA ports; this is not activated for
M.2 SSDs.
23. BIOS Select Switch
This switch toggles between physical BIOS chips. The Z370 FTW features two
BIOS chips soldered to the PCB. Each chip holds only the settings and profiles
that have been saved to the BIOS chip while active. This allows you to swap
between two physically different BIOS chips. This also makes it substantially
easier to hotflash a BIOS if needed. If instructions are needed for hotflashing a
BIOS, please contact EVGA Customer Service (Page 123 for contact info).
24. CMOS Battery
The CMOS battery backup provides uninterruptable power to the BIOS/UEFI
to store all its settings; otherwise, each power on would act as if the BIOS was
just reset. These batteries typically last several years and rarely need to be
replaced.
25. PC Speaker
This is a small mono low-fidelity speaker, which is permanently attached to the
motherboard. Its primary use is for debugging purposes. A POST beep may
indicate a successful POST or various tones for USB initialization, while other
beeps may indicate an issue during the POST process. Please see Page 124 for
more details.
26. Rear Panel Connectors (Figure 2)
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