Chapter 2: Installation
2-23
RST
PWR
ON
XOH/FF
X
NIC
1
PWR
LED
HDD
LED
JF1
USB 2/3USB 8/9(3.0)
2-3:BIOS RECOVERY
1-2:NORMAL
JBR1
WATCH DOG
1-2:RST
2-3:NMI
JWD1:
JBR1
JPME2
AUDIO FP
COM1
JD1:SPEAKER :1-4
JD1
JSD1
JWD1
JL1
JL1:
CHASSIS
INTRUSION
2-3:ME MANUFACTURING MODE
JPME2:
1-2:NORMAL
I-SATA5
I-SATA4
I-SATA3
I-SATA2
I-SATA1
I-SATA0
PCH SLOT1 PCI-E 3.0 X1
JBT1
PCH SLOT2 PCI-E 3.0 X4
J9702
JSTBY1
J9701
JI2C1
JI2C2
JSPDIF_OUT
5V STBY POWER
JSTBY1:
CPU SLOT3 PCI-E 3.0 X16
OFF:DISABLE
JI2C1/JI2C2
ON :ENABLE
HD AUDIO
PCIE M.2
CONNECTOR 1
SYS_FAN2
USB 6/7(3.0)
LAN
CPU
JPW1
DVI
JPUSB1:USB0/1 WAKE UP
HDMI/DP
DIMMB2
DIMMA2
2-3 DISABLE
1-2 ENABLE
CPU_FAN1
JVR1
JPUSB1
JPW2
KB/MOUSE
LED1
REV: 1.00
C7B250-CB-MK
DESIGNED IN USA
+
MAC CODE
BAR CODE
BIOS LICENSE
C
A
+
USB 4/5
(3.0)
USB 0/1
B1
2280
2260
2242
SYS_FAN1
JCMOS
MH10
MH11
MH12
A. COM1
B. Speaker Header
Serial Port
There is one serial (COM) port header on
the motherboard. See the table on the
right for pin denitions.
Serial/COM Ports
Pin Denitions
Pin # Denition Pin # Denition
1 DCD 6 DSR
2 RXD 7 RTS
3 TXD 8 CTS
4 DTR 9 RI
5 Ground 10 N/A
Speaker
If you wish to use an external speaker,
close pins 1~4 with a cable. See the table
on the right for pin denitions.
Speaker Connector
Pin Denitions
Pin Setting Denition
Pins1~4 External Speaker
A
B