Motherboard Layout
USB 3.0
T: USB0
B: USB1
USB 2.0
T: USB2
B: USB3
33
32
31
30
29
28
27
26
25
24
23
1
CPU Fan Connector (CPU_FAN1)
2
1155-Pin CPU Socket
3
ATX 12V Power Connector (ATX12V1)
4
2 x 240-pin DDR3 DIMM Slots
(DDR3_A1, DDR3_B1, Black)
5
ATX Power Connector (ATXPWR1)
6
USB 3.0 Header (USB3_2_3, Black)
7
Intel B75 Chipset
8
SPI Flash Memory (64Mb)
9
SATA3 Connector (SATA3_0, Gray)
10
SATA2 Connector (SATA2_5, Black)
11
SATA2 Connector (SATA2_2, Black)
12
SATA2 Connector (SATA2_4, Black)
13
Chassis Fan Connector (CHA_FAN2)
14
SATA2 Connector (SATA2_3, Black)
15
SATA2 Connector (SATA2_1, Black)
16
System Panel Header (PANEL1, Black)
17
USB 2.0 Header (USB6_7, Black)
2
1
2
3
17.8cm (7.0 in)
ATX12V1
CPU_FAN1
Top:
RJ-45
P75 Pro3
PWR_FAN1
CHA_FAN1
LAN
PHY
PCIE1
ErP/EuP Ready
AUDIO
Intel
CODEC
HDMI_SPDIF1
1
B75
1
HD_AUDIO1
PCIE2
PCI Express 3.0
PCIE3
X
Fast USB
X
PCIE4
Fast RAM
X
Fast LAN
RoHS
CMOS
Battery
PCI1
SATA2_2
PCI2
CI1
PLED1
1
1
USB4_5
USB6_7
SPEAKER1
PLED PWRBTN
1
1
PANEL1
1
1
1
CLRCMOS1
IR1
1
1
HDLED RESET
SATA2_1
CIR1
22
21
20
19
18
17
16
15
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
ASRock P75 Pro3 Motherboard
4
5
6
7
8
64Mb
BIOS
SATA3_0
9
10
SATA2_5
11
SATA2_4
12
CHA_FAN2
SATA2_3
14
13
USB 2.0 Header (USB4_5, Black)
Consumer Infrared Module Header
(CIR1, Gray)
Infrared Module Header (IR1, Black)
Chassis Speaker Header (SPEAKER1, Black)
Clear CMOS Jumper (CLRCMOS1)
Chassis Intrusion Header (CI1)
Power LED Header (PLED1)
PCI Slots (PCI1-2, Black)
PCI Express 2.0 x1 Slot (PCIE4, Black)
PCI Express 2.0 x16 Slot (PCIE3, Black)
PCI Express 2.0 x1 Slot (PCIE2, Black)
Front Panel Audio Header (HD_AUDIO1, Black)
HDMI_SPDIF Header (HDMI_SPDIF1, Black)
PCI Express 3.0 x16 Slot (PCIE1, Black)
Power Fan Connector (PWR_FAN1)
Chassis Fan Connector (CHA_FAN1)