1.2
Motherboard overview
1.2.1
Motherboard layout
Place six screws into the holes indicated by circles to secure the motherboard to the
chassis. DO NOT overtighten the screws! Doing so can damage the motherboard.
Ensure that you install the motherboard into the chassis in the correct orientation. The edge
with external ports goes to the rear part of the chassis.
1.2.2
Layout contents
Place this side towards
the rear of the chassis.
P7H55-M LX/USB3
PCIEX16
PCI1
PCI2
PCIEX4_1
USB1112
USB910
USB78
USB56
SPEAKER
CLRTC
AAFP
ATX12V
EATXPW
R
CPU_FAN
CHA_FAN
Lithium Cell
CMOS Power
Super
I/O
AUDIO
ICS
9LRS954
VIA
VT1708S
RTL
8111E
EPU
KBMS
64Mb
BIOS
SB_PWR
SPDIF_OUT
19.8cm(7.8in)
24.4cm(9.6in)
LGA1156
Intel
®
H55
DDR3 DIMM_A1 (64bit, 240-pin module
)
DDR3 DIMM_B1 (64bit, 240-pin module
)
LAN1_USB12
USB34
SATA3G_5
SATA3G_3
SATA3G_2
SATA3G_1
SATA3G_6
SATA3G_4
VGA
DVI
F_PANEL
COM
ASM
1442
Asmedia
1042
3
2
1
4
1
2
5
9
8
7
6
12
13
11 10
5
Connectors/Jumpers/Slots/LED
Page Connectors/Jumpers/Slots/LED
Page
1. CPU and Chassis fan connectors (4-pin CPU_FAN,
3-pin CHA_FAN)
1-11 8. Speaker connector (4-pin SPEAKER)
1-13
2. ATX power connectors (24-pin EATXPWR, 4-pin
ATX12V)
1-12 9. USB connectors (10-1 pin USB56, USB78,
USB910, USB1112)
1-9
3. Intel
®
CPU socket
10. Digital audio connector (4-1 pin SPDIF_OUT) 1-10
4. DDR3 DIMM sockets
1-3
11. Serial port connectors (10-1 pin COM1)
1-14
5. Serial ATA connectors (7-pin SATA1-6)
1-10 12. Front panel audio connector (10-1 pin AAFP) 1-13
6. Clear RTC RAM (3-pin CLRTC)
1-7
13. Onboard LED (SB_PWR)
1-1
7. System panel connector (10-1 pin F_PANEL)
1-11
1-2
ASUS P7H55-M LX/USB3
