Hardware Reference
20
Serial ports
Two COM connections (COM1 & COM2) are located on the motherboard. COM1 is located on
the backplane IO panel to provide serial connection support for the motherboard.
Video connector
A video (VGA) connector is located next to COM1 on the IO backplane. This connector is used
to provide video display.
Universal serial bus (USB)
Six Universal Serial Bus ports (USB0/1, 2/3, and 4/5) are located on the I/O back panel.
Additionally, four USB connections (USB 6, 7, and 8/9) are on the motherboard to provide front
chassis access. (Cables are not included.)
Table 7. Serial port pin definitions
Pin # Definition Pin # Definition
1DCD 6DSR
2RXD 7RTS
3TXD 8CTS
4DTR 9RI
5 Ground 10 N/A
Table 8. VGA pin definitions
Pin # Definition Pin # Definition
1RED 9+5V (fused)
2GREEN 10GND
3BLUE 11Not used
4 Not used 12 SDA
5GND 13HSYNC
6RED_RTN 14VSYNC
7 GREEN_RTN 15 SCL
8BLUE_RTN
Table 9. USB pin definitions
Pin # Definition
1+5V
2Data–
3Data+
4 Ground
5N/A
1
5
11
15
10
6
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