EVGA X299 DARK (151-SX-E299)
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chip holds only the settings and profiles that have been saved to the BIOS chip
while active. This allows you to swap between three 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 130 for contact info).
29. CMOS Battery
The +3V CMOS battery backup provides uninterruptable power to the
BIOS/UEFI to keep all of the settings; otherwise, each boot would behave like
you just reset the BIOS. These batteries typically last several years and rarely
need to be replaced.
30. PCIe Disable Switches
These are DIP switches to physically disable power to a specific PCIe slot. By
default, all switches are in the “On” position to the left. Move the switch to the
right to disable a specific slot. From top to bottom, the switches correspond to
PE1, PE2, PE3, PE4, and PE6.
31. ProbeIt Header
The ProbeIt header is a means of live monitoring several different system
voltages in real-time with a multimeter. One terminal needs to connect to a
ground wire and the other to the specific you are trying to monitor. From top
to bottom this is the function for each connector: VCore, Ground, DIMM,
Ground, VCCPLL, Ground, VSA, Ground, VCCPLL_OC, and Ground.
32. PC Speaker
This is a small mono low-fidelity speaker permanently attached to the
motherboard used mainly for debugging purposes. A POST beep may indicate
a successful POST, various tones for USB initialization, and other beeps to
indicate an issue during the post process. Please see Page 142 for more details.
33. Rear Panel IO (Figure 2)
This is the section referred to as the I/O Hub. This panel contains the
hardwired USB, Sound, and Ethernet connections. Please see Page 16 for a
component level breakdown.
CMOS Reset Button (On IO Panel)
This button has two main uses: the first is standard practice to clear BIOS and
power on before updating the BIOS, and the second is standard practice when
troubleshooting instances when the motherboard fails to POST, such as after
upgrading RAM or CPU, installing new hardware, a failed overclock, etc. This
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Страница 89: ...EVGA X299 DARK 151 SX E299 89 Select the drive you wish to use for the repair and click the Rebuild button...
