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2.12 PC/104 connectors (CN8)
The PCA-6753F is equipped with a 16-bit ISA signal PC/104 connec-
tor for future expansion. See Appendix D for details.
2.13 AT power connector (CN9)
If you prefer not to acquire power through the PCA-6753F backplane
via the gold H-connectors, The big 4P power connector (CN9) also
provides power input connectors for +5 V, and +12 V.
2.14 Serial ports
(CN12: COM1; CN10: COM2/RS-232;
CN11: COM2/RS-422/485)
The PCA-6753F offers two serial ports: COM1 in RS-232 and COM2
(CN10: RS-232, CN11:RS-422/485). These ports let you connect to
serial devices (a mouse, printers, etc.) or a communication network.
You can select the address for each port (for example, 3F8H [COM1],
2F8H [COM2]) or disable each port. Use the BIOS Advanced Setup
program, which is covered in Chapter 4.
The card mounting bracket holds the serial port connector for the one
port. The parallel port and serial port adapter kit (supplied with the
card) holds the connector for the other port. This lets you connect and
disconnect cables after you install the card. The DB-9 connector on
the bottom of the bracket is the first RS-232 port, COM1. The DB-9
connector on the adapter kit is the second serial port, COM2.
Table 2-2: Serial port connections (COM1, COM2)
Connector
COM1
COM2
Function
RS-232
RS-232/422/485
Chapter 2 Connecting Peripherals
21
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