Parallel Port Connector (Cn17); Keyboard And Ps/2 Mouse Connector (Cn27); Power,Hdd Led, Reset Connector (Cn11, J1); Power & Hdd Led (Cn13) - Advantech PCM-9577 User Manual

2.11 Parallel port connector (CN17)

Normally, the parallel port is used to connect the card to a printer. The
PCM-9577 includes a multi-mode (ECP/EPP/SPP) parallel port accessed
via CN17 and a 26-pin flat-cable connector. You will need an adapter
cable if you use a traditional DB-25 connector. The adapter cable has a
26-pin connector on one end, and a DB-25 connector on the other.
The parallel port is designated as LPT1, and can be disabled or changed to
LPT2 or LPT3 in the system BIOS setup.
The parallel port interrupt channel is designated to be IRQ7.
You can select ECP/EPP DMA channel via BIOS setup.

2.12 Keyboard and PS/2 mouse connector (CN27)

The PCM-9577 board provides a keyboard connector that supports both a
keyboard and a PS/2 style mouse. In most cases, especially in embedded
applications, a keyboard is not used. If the keyboard is not present, the
standard PC/AT BIOS will report an error or fail during power-on self-
test (POST) after a reset. The PCM-9577's BIOS standard setup menu
allows you to select "All, But Keyboard" under the "Halt On" selection.
This allows no-keyboard operation in embedded system applications,
without the system halting under POST.

2.13 Power,HDD LED, Reset Connector (CN11, J1)

Next, you may want to install external switches to monitor and control the
PCM-9577. These features are optional: install them only if you need
them. The power & HDD LED connector (CN11) is a 6-pin male, dual in-
line header. It provides connections for a hard disk access indicator, and
power on indicator.
2.13.1 Power & HDD LED (CN13)
The HDD LED indicator for hard disk access is an active low signal (24
mA sink rate). Power supply activity LED indicator.
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