ASROCK M3A790GXH/USB3, Installation Manual, Page: 18 / 225

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ASRock M3A790GXH/USB3 Motherboard
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Surround Display Feature
This motherboard supports surround display upgrade. With the internal VGA output
support (DVI-D, D-Sub and HDMI) and external add-on PCI Express VGA cards, you
can easily enjoy the benefits of surround display feature.
Please refer to the following steps to set up a surround display environment:
1. Refer to page 20 and 21 to reverse the direction of ASRock SLI/XFire Switch
Card.
2. Install the ATI
TM
PCI Express VGA cards on PCIE2, PCIE3 and PCIE4 slots. Please
refer to page 16 for proper expansion card installation procedures for details.
3. Connect DVI-D monitor cable to VGA/DVI-D port on the I/O panel, connect D-Sub
monitor cable to VGA/D-Sub port on the I/O panel, and connect HDMI monitor
cable to HDMI port on the I/O panel. Then connect other monitor cables to the
corresponding connectors of the add-on PCI Express VGA cards on PCIE2, PCIE3
and PCIE4 slots.
4. Boot your system. Press <F2> to enter BIOS setup. Enter “Share Memory”
option to adjust the memory capability to [32MB], [64MB], [128MB] [256MB] or
[512MB] to enable the function of VGA/D-sub. Please make sure that the value
you select is less than the total capability of the system memory. If you do not
adjust the BIOS setup, the default value of “Share Memory”, [Auto], will disable
VGA/D-Sub function when the add-on VGA card is inserted to this motherboard.
5. Install the onboard VGA driver and the add-on PCI Express VGA card driver to
your system. If you have installed the drivers already, there is no need to install
them again.
6. Set up a multi-monitor display.
For Windows ® XP / XP 64-bit OS:
Right click the desktop, choose “Properties”, and select the “Settings” tab
so that you can adjust the parameters of the multi-monitor according to the
steps below.
A. Click the “Identify” button to display a large number on each monitor.
B. Right-click the display icon in the Display Properties dialog that you wish
to be your primary monitor, and then select “Primary”. When you use
multiple monitors with your card, one monitor will always be Primary,
and all additional monitors will be designated as Secondary.
C. Select the display icon identified by the number 2.
D. Click “Extend my Windows desktop onto this monitor”.
E. Right-click the display icon and select “Attached”, if necessary.
F. Set the “Screen Resolution” and “Color Quality” as appropriate for the
second monitor. Click “Apply” or “OK” to apply these new values.
G. Repeat steps C through E for the diaplay icon identified by the number
one, two, three, four, five, six, seven and eight.