Gigabyte B560M DS3H AC User Manual page 20

14) COM (Serial Port Header) M
The COM header can provide one serial port via an optional COM port cable. For purchasing the
optional COM port cable, please contact the local dealer.
9 1
DEBUG
PORT
10 2
15) LPT (Parallel Port Header) M
The LPT header can provide one parallel port via an optional LPT port cable. For purchasing the optional
LPT port cable, please contact the local dealer.
25
26
16) BAT (Battery)
The battery provides power to keep the values (such as BIOS configurations, date, and time information)
in the CMOS when the computer is turned off. Replace the battery when the battery voltage drops to a low
level, or the CMOS values may not be accurate or may be lost.
• Always turn off your computer and unplug the power cord before replacing the battery.
• Replace the battery with an equivalent one. Damage to your devices may occur if the battery
is replaced with an incorrect model.
• Contact the place of purchase or local dealer if you are not able to replace the battery by
yourself or uncertain about the battery model.
• When installing the battery, note the orientation of the positive side (+) and the negative side
(-) of the battery (the positive side should face up).
• Used batteries must be handled in accordance with local environmental regulations.
M Only for the B560M DS3H.
Pin No. Definition
1 NDCD-
2 NSIN
3 NSOUT
4 NDTR-
5 GND
Pin No. Definition
1
STB-
1
2
AFD-
3
PD0
2
4
ERR-
5
PD1
6
INIT-
7
PD2
8
SLIN-
9
PD3
You may clear the CMOS values by removing the battery:
1. Turn off your computer and unplug the power cord.
2. Gently remove the battery from the battery holder and wait for one minute. (Or use a metal
object like a screwdriver to touch the positive and negative terminals of the battery holder,
making them short for 5 seconds.)
3. Replace the battery.
4. Plug in the power cord and restart your computer.
- 20 -
Pin No. Definition
6 NDSR-
7 NRTS-
8 NCTS-
9 NRI-
10 No Pin
Pin No. Definition Pin No. Definition
10 19
GND
11 20
PD4
12 21
GND
13 22
PD5
14 23
GND
15 24
PD6
16 25
GND
17 26
PD7
18
GND
ACK-
GND
BUSY
GND
PE
No Pin
SLCT
GND