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1.3.6 Industrial features
• Watchdog timer: Can generate a system reset or IRQ11. The watch-
dog timer is programmable, with each unit equal to one second or one
minute (255 levels)
1.3.7 Mechanical and environmental specifications
• Operating temperature: 0°~60° C (32° ~ 140° F, Depending on CPU)
• Storage temperature: -20°~ 70° C (-4° ~ 158° F)
• Humidity: 20 ~ 95% non-condensing
• Power supply voltage: +3.3V, +5 V, ±12 V
• Power consumption: Typical : +3.3V:8.13A, +5V:0.57A ,
+12V:5.29A (Intel Pentium® 4 3.2GHz, 4GB DDR 400)
• Board size: 304.8 x 228.6 mm (12" x 9.6"")
• Board weight: 0.7 kg (1.68 lb)
1.4 Jumpers and Connectors
Connectors on the AIMB-744 motherboard link it to external devices
such as hard disk drives and a keyboard. In addition, the board has a num-
ber of jumpers used to configure your system for your application.
The tables below list the function of each of the board jumpers and con-
nectors. Later sections in this chapter give instructions on setting jump-
ers. Chapter 2 gives instructions for connecting external devices to your
motherboard.
Table 1.1: Jumpers
Label
Function
J1 CMOS Clear
J2 Watchdog timer output selection
J5 PCI-X 33/66Mhz selection 1
J6 PCI-X 33/66MHz selection 2
J8 PCI slots 3.3V/5V selection