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Chapter 5 I/O Board Configuration
Default settings are indicated with a star sign (
). The POS-420 Expander plus's I/O module has three I/O
boards, including the IOTR board, a top I/O board, and a bottom I/O board.
I/O Module Front (inside, facing front of system box)
I/O Module Rear (facing the rear of the system box, actual I/O ports)
IOTR Board: Connector Pin Definitions and Jumper Settings
The IOTR board transfers signals from the PI-91X main board to the top and bottom I/O boards.
IOTR Board Top
I/O BUS1 (164 PIN) PCI Express Connector
This connects to the system box main board.
I/O BUS2 (64 PIN) PCI Express Connector
IO_BUS2
IO_BUS1
Top I/O Board
Bottom I/O Board
IOTR Board