Samsung 164BX user manual Power Requirements, Environmental Requirements

Power Requirements

2.1 Power Requirements

The AlphaPC 164UX motherboard requires a minimum of a 300 watt power supply. The power supply must be ATX-compliant.

Table 2–3 Power Supply DC Current Requirements

Voltage	Current
+3.3Vdc,±5%	14 A
+5 Vdc,±5%	25 A
-5 Vdc,±5%	0.5 A
+12 Vdc,±5%	10 A
-12 Vdc,±5%	0.5 A

Caution: Fan sensor required. The 21164 microprocessor cooling fan must have a built-in sensor that will drive a signal if the airflow stops. The sensor is connected to the motherboard connector J35. When the signal is generated, the speaker generates a tone..

2.2 Environmental Requirements

The 21164 microprocessor is cooled by a small fan blowing directly into the chip’s heat sink. The AlphaPC 164UX motherboard is designed to run efficiently using only this fan. Additional fans may be necessary depending upon cabinetry and the requirements of add-in cards and disk drives.

The AlphaPC 164UX motherboard is specified to run within the environment listed in Table 2–4.

Table 2–4 AlphaPC 164UX Motherboard Environmental Requirements

Parameter	Specification
Operating Temperature	10°C to 40°C (50°F to 104°F)
Storage Temperature	-55°C to 125°C ( -67°F to 257°F)
Relative Humidity	10% to 90% with maximum wet bulb temperature 28°C
	(82°F) and a minimum dew point 2°C (36°F)
Rate of (dry bulb) temperature	11°C/hour ±2°C/hour (20°F/hour ±4°F/hour)
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2–4Features of the AlphaPC164UX Motherboard