CHAINTECH 7AIA5, Manual

Page: 21 / 53

Chapter 2
18
USB 0/1Ports and USB 2/3 Connector (USB1/CN11)
If you want to use a USB keyboard, you must
enable the USB keyboard support function in
BIOS's Integrated Peripherals menu (See Section
3-4).
This board contains a USB Host controller and
includes a root hub with two USB ports (meets
USB Rev 1.0 spec.) and a connector for optional
USB Adaptor (USB2/3). Four USB peripherals or
hub devices are able to be connected.
CPU/System Cooling Fan Connectors
(
FAN1/FAN2)
These added connectors allow the fan to draw
their power from the mainboard instead of the disk
drive connector.
The board's management extension hardware is
able to detect the CPU and system fan speed in
rpm (revolutions per minute). These connectors
supports 3-pin cooling fans with minimum of
3500 RPM. The wiring and plug may vary
depending on the manufacturer. On standard fans,
the red is positive (+12V), the black is ground,
and the yellow wire is the rotation signal.
G N D G N D
G N D G N D
G N D
+12 +12 +12 +12 +12
Rotation Rotation Rotation Rotation Rotation
FAN1 FAN2
USB1 CN11