Advantech HMI-640S User Manual
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Chapter 1 General Information
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• RAM: 16MB EDO RAM on board
• IDE hard disk drive interface: Supports up to two Enhanced IDE
devices, auto-detect BIOS
• Multi-mode parallel port: Configured to LPT1, LPT2, LPT3 or
disabled. Supports SPP/EPP/ECP; D-SUB 25-pin connector (on I/O
module)
• Serial ports: One serial RS-232 port, one serial RS-232/422/485 port
(configurable by DIP switches; please refer to Appendix B).
• PS/2 keyboard/mouse connector: Mini-DIN keyboard connector
• Watchdog timer: Generates a system reset at a fixed 1.6-second
interval. Watchdog timer can be enabled/disabled through software.
The Watchdog timer is disabled by default factory setting.
• External expansion slot: 104-pin connector, supports up to two
cascaded 16-bit PC/104 cards with +5 V and +12 V
• Battery: 3 V @ 195 mA Lithium battery for CMOS backup