GEMINI user manual
Issue D
46
System control interface
A system control interface connector, JFRNT, is provided to interface to standard input
switches and status indicators for:
•
Power status.
A connection for a power on LED. This LED indicates the power state of the GEMINI.
•
System reset switch.
A connection for a momentary on reset switch. This provides standard PC reset
functionality.
•
Power button (on/off switch).
A connection for a momentary on ACPI power button. This provides standard PC
on/off functionality. The on/off switch ACPI functionality is configured in the BIOS
power management setup screen.
•
PC speaker.
A connection to a standard 8
Ω
speaker to support PC speaker functionality. The
GEMINI supports a mini buzzer onboard.
•
SATA/IDE activity.
A connection for a hard drive activity LED. This LED shows activity on both the SATA
and IDE based devices.
Onboard audio interface
The GEMINI provides the onboard AC97 5.1-channel audio interface with Realtek
ALC655.
USB 2.0 interface
Based on Intel ICH7-M, the GEMINI provides six USB2.0 ports. The USB2.0 interface
supports transfer rates up to 480Mbps with an output Intensity of 500mA.
The USB2.0 protocol is only active when you connect a USB2.0 device. If you
connect a USB1.1 device, the port automatically switches to the USB1.1 protocol.
The maximum USB2.0 transfer rate of 480Mbps is dependent on device
connected supporting this rate.
Power and fan connector
The GEMINI requires either an ATX power supply connected to the onboard ATX
connector or a 8V to 24V DC input source connected to the onboard 4-pin CN_DCIN
connector. See
on page
.
The maximum power consumption of the GEMINI mother board is about 60W with an
Intel Core 2 Duo T2500 stressed to the absolute maximum power.
The GEMINI provides supports for one smart (4 wire) CPU fan allowing automatic
thermal control of the board. This option is selectable in the BIOS and is disabled by
default. The GEMINI also provides an onboard system FAN connector for 12V fan with
tachometer input for speed feedback.
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