2.14 External Back Panel I/O Ports
There are 9 kinds of external connectors on the motherboard. The view in the drawing on the
next page is the back panel of the motherboard housing.
1. PS/2 Mouse Port (Green, 6-pin MOUSE)
The onboard PS/2 Mouse port is a 6-pin Mini-Din connector marked “MOUSE”
2. PS/2 Keyboard Port (Purple, 6-pin KB)
The onboard PS/2 Keyboard port is a 6-pin Mini-Din connector marked “KB”.
3. Universal Serial Bus (USB) Ports 1 & 2 (Black, two 4-pin USBs)
You can attach USB devices to the two USB ports marked “USB”. (Two additional USB
Ports can be added using an optional 2x5 header to the on-board connectors JUSB1 and
JUSB2.)
4. Parallel Port (Burgundy, 25-pin PRN)
The onboard parallel/printer port is a 25-pin D-type connector marked “PRN”.
HARDWARE INSTALLATION
16
2.13 Power Connector (20-pin PWR-CONN)
Make sure to plug the ATX power supply connector in the right direction. The pin definition is
shown below. Make sure that your ATX power supply can support at least 720mA on standby.
Power Connector
PSON# : Power Supply on
P W R
+3.3V
-12.0V
GND
PSON#
GND
GND
GND
-5.0V
+5.0V
+5.0V
Power Good
+3.3V
+3.3V
GND
+5.0V
GND
+5.0V
GND
+5.0V Standby
+12.0V
Transcend