Motherboard Layout
USB 2.0
T: USB0
B: USB1
USB 3.0
T: USB0
B: USB1
USB 2.0
T: USB2
B: USB3
27
AUDIO
CODEC
26
25
24
23
HD_AUDIO1
1
22
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)
2
1
2
ATXPWR1
PWR_FAN1
ATX12V1
Top:
RJ-45
CMOS
Battery
CHA_FAN1
LAN
PHY
PCIE1
IR1
1
1
PCI1
CI1
TPMS1
1
COM1
LPT1
1
1
21
20
ASRock B75M-DGS R2.0 Motherboard
3
4
5
CPU_FAN1
B75M-DGS
Intel
B75
SPEAKER1
USB4_5
USB6_7
1
PLED PWRBTN
1
1
1
HDLED RESET
PANEL1
19
18
17
16
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)
6
7
USB3_2_3
8
9
10
64Mb
BIOS
11
12
SATA2_2
13
1
CLRCMOS1
SATA2_3
15
14
