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DO NOT short-circuit the pins except when clearing the RTC RAM. Short-circuiting or
placing a jumper cap will cause system boot failure!
If the steps above do not help, remove the onboard button cell battery and short the two
pins again to clear the CMOS RTC RAM data. After clearing the CMOS, reinstall the button
cell battery.
13. COM Port headers
The COM (Serial) Port headers allow you to connect COM port modules.
Connect the COM port module cable to any of these headers, then install
the module to a slot opening on the system chassis.
The COM port module is purchased separately.
14. COM Debug header
This header allows connection to a COM Debug card.
The COM Debug Card is purchased separately.
15. Front Panel Audio header
This header is for a chassis-mounted front panel audio I/O module that
supports HD Audio. Connect one end of the front panel audio I/O module
cable to this header.
We recommend that you connect a high-definition front panel audio
module to this header to avail of the motherboard's high-definition
audio capability.
16. LPT header
The LPT (Line Printing Terminal) header supports devices such as a
printer. LPT standardizes as IEEE 1284, which is the parallel port interface
on IBM PC-compatible computers.
17. M.2 slot (Key E)
This slot allows you to install an M.2 (WIFI) module.
The M.2 Wi-Fi module is purchased separately.
Pro B760M-CT
E21252_Pro_B760M-CT_UM.indd 5
E21252_Pro_B760M-CT_UM.indd 5
COM
PIN 1
COM_DEBUG
PIN 1
AAFP
PIN 1
HD-audio-compliant
pin definition
LPT
PIN 1
1-5
2022/11/11 14:49:17
2022/11/11 14:49:17
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