ASROCK H81M-G - Power and Serial Port Connectors

21
English
H81M-G
ATX Power Connector
(24-pin ATXPWR1)
(see p.1, No. 7)
is motherboard pro-
vides a 24-pin ATX power
connector. To use a 20-pin
ATX power supply, please
plug it along Pin 1 and Pin
13.
ATX 12V Power
Connector
(8-pin ATX12V1)
(see p.1, No. 2)
is motherboard pro-
vides an 8-pin ATX 12V
power connector. To use a
4-pin ATX power supply,
please plug it along Pin 1
and Pin 5.
PCIe Power Connector
(4-pin PCIE_PWR1)
(see p.1, No. 22)
Please connect a 4 pin molex
power cable to this connector
when more than three
PCIe cards are installed.
Serial Port Header
(9-pin COM1)
(see p.1, No. 20)
is COM1 header
supports a serial port
module.
TPM Header
(17-pin TPMS1)
(see p.1, No. 19)
is connector supports
Trusted Platform Module
(TPM) system, which can
securely store keys, digital
certicates, passwords,
and data. A TPM system
also helps enhance
network security, protects
digital identities, and
ensures platform integrity.
12
1
24
13
CCTS#1
RRTS#1
DDSR#1
DDTR#1
RRXD1
GND
TTXD1
DDCD#1
1
RRI#1
8 5
4 1
1
GND SMB_DATA_MAIN
LAD2
LAD1
GND
S_PWRDWN#
SERIRQ#
GND
PCICLK
PCIRST#
LAD3
+3V
LAD0
+3VSB
GND
FRAME
SMB_CLK_MAIN