Asus PRIME X370-A Manual page 14

14. Clear RTC RAM (2-pin CLRTC)
This header allows you to clear the Real Time Clock (RTC) RAM in CMOS. You can
clear the CMOS memory of date, and system setup parameters by erasing the CMOS
RTC RAM data. The onboard button cell battery powers the RAM data in CMOS, which
include system setup information such as system passwords.
To erase the RTC RAM:
1. Turn OFF the computer and unplug the power cord.
2. Use a metal object such as a screwdriver to short the two pins.
3. Plug the power cord and turn ON the computer.
4. Hold down the <Del> key during the boot process and enter BIOS
setup to re-enter data.
If the steps above do not help, remove the onboard battery and short the two pins again to
clear the CMOS RTC RAM data. After clearing the CMOS, reinstall the battery.
15. PCI Express 2.0 x1 slots
This motherboard has two PCI Express 2.0 x1 slots that support PCI Express x1
network cards, SCSI cards, and other cards that comply with the PCI Express
specifications.
16. PCI slots
The PCI slots support cards such as LAN card, SCSI card, USB card, and other cards
that comply with the PCI specifications.
17. PCI Express x16 slots
This motherboard supports two PCI Express x16 graphic cards that comply with the
PCI Express specifications.
VGA configuration
Single VGA / PCIe card
Dual VGA / PCIe cards
•
•
•
1-6
PCI Express operating mode
PCIe 3.0/ 2.0 x16_1 (gray)
x16 (on AMD Ryzen™ processors)
x8 (on AMD 7th Generation A-series /
Athlon™ processors)
x16 (on AMD Ryzen™ processors)
x8 (on AMD 7th Generation A-series /
Athlon™ processors)
In single VGA card mode, use the PCIe 3.0/2.0 x16_1 slot (gray) for a PCI Express
x16 graphics card to get better performance.
We recommend that you provide sufficient power when running CrossFireX™ mode.
Connect a chassis fan to the motherboard connector labeled CHA_FAN1/2 when
using multiple graphics cards for better thermal environment.
CLRTC
PIN 1
PCIe 2.0 x16_2
N/A
x4
Chapter 1: Product introduction