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SLI/XFIRE Power Connector
(4-pin SLI/XFIRE_PWR1)
(see p.2 No. 39)
Serial port Header
(9-pin COM1)
(see p.2, No. 40)
HDMI_SPDIF Header
(2-pin HDMI_SPDIF1)
(see p.2, No. 42)
TM
V-Probe
(7-pin VOL_CON1,
7-pin VOL_CON2)
(see p.2, No. 13)
42
SLI/XFIRE_POWER1
1
GND
SPDIFOUT
VCCM: DRAM voltage
VCCSA: CPU system agent voltage
VTT2: Main VTT voltage
VTT1: 2nd VTT voltage
VCORE: CPU core voltage
DMI_COMP: DMI COMP voltage
XCLK_RCOMP: Internal clock gen COMP voltage
DMI: DMI voltage
PCH2: Chipset core voltage
PCH: 2nd chipset core voltage
1.8V_PLL: CPU PLL voltage
ASRock Z77 OC Formula Motherboard
It is not necessary to use this
connector, but please connect it
with a hard disk power
connecor when two graphics
cards are plugged to this
motherboard.
This COM1 header supports a
serial port module.
HDMI_SPDIF header, providing
SPDIF audio output to HDMI
VGA card, allows the system to
connect HDMI Digital TV/
projector/LCD devices. Please
connect the HDMI_SPDIF
connector of HDMI VGA card to
this header.
Users are able to measure
onboard components voltage,
including VCCM, VCCSA,
VTT2, VTT1, VCORE,
DMI_COMP, XCLK_RCOMP,
DMI, PCH2, PCH and
1.8V_PLL.
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