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14
1.4 Motherboard Layout
Intel
B75
64Mb
BIOS
D
D
R
3
_
A
1
(6
4
b
it
,
2
4
0
-p
in
m
o
d
u
le
)
CMOS
Battery
Super
I/O
ATXPWR1
D
D
R
3
_
B
1
(6
4
b
it
,
2
4
0
-p
in
m
o
d
u
le
)
PCIE1
PCI1
ATX12V1
P
S
2
K
e
y
b
o
a
r
d
P
S
2
M
o
u
s
e
V
G
A
1
AUDIO
CODEC
LAN
PHY
Top:
RJ-45
USB 2.0
T: USB2
B: USB3
To
p
:
L
in
e
In
C
en
te
r:
F
ro
n
t
B
o
tto
m
:
M
ic
In
USB 3.0
T: USB0
B: USB1
USB 2.0
T: USB0
B: USB1
HD_AUDIO1
1
COM1
1
IR1
1
USB4_5
1
USB6_7
1
HDLED RESET
PLED PWRBTN
PANEL1
1
SATA2_2
1
SPEAKER1
SATA2_3
S
A
T
A
2
_
1
S
A
T
A
3
_
0
PWR_FAN1
CPU_FAN1
CHA_FAN1
CLRCMOS1
1
B75M-DGS
P
C
I
E
x
p
re
s
s
3
.0
X
F
a
s
t
L
A
N
R
o
H
S
LPT1
1
2
3
4
5
6
7
8
11
9
12
10
14
13
15
16
18
19
17
20
21
22
23
24
27
USB3_2_3
X
F
a
s
t
U
S
B
X
F
a
s
t
R
A
M
1
CI1
25
D
V
I1
1
F
ro
n
t
U
S
B
3
.0
TPMS1
1
26
1
ATX 12V Power Connector (ATX12V1)
2
Power Fan Connector (PWR_FAN1)
3
ATX Power Connector (ATXPWR1)
4
1155-Pin CPU Socket
5
CPU Fan Connector (CPU_FAN1)
6
2 x 240-pin DDR3 DIMM Slots
(DDR3_A1, DDR3_B1)
7
USB 3.0 Header (USB3_2_3)
8
SATA2 Connector (SATA2_1)
9
SATA3 Connector (SATA3_0)
10
SPI Flash Memory (64Mb)
11
PCI Express 3.0 x16 Slot (PCIE1)
12
Intel B75 Chipset
13
Clear CMOS Jumper (CLRCMOS1)
14
SATA2 Connector (SATA2_2)
15
SATA2 Connector (SATA2_3)
16
Chassis Speaker Header (SPEAKER1)
17
System Panel Header (PANEL1)
18
USB 2.0 Header (USB6_7)
19
USB 2.0 Header (USB4_5)
20
COM Port Header (COM1)
21
Print Port Header (LPT1)
22
Front Panel Audio Header (HD_AUDIO1)
23
TPM Header (TPMS1)
24
PCI Slot (PCI1)
25
Infrared Module Header (IR1)
26
Chassis Intrusion Header (CI1)
27
Chassis Fan Connector (CHA_FAN1)