Intel MB440LX manual Power System, Server Cooling, Diskette Write Protection, Video Blanking

Diskette Write Protection

If the protection feature is enabled with the SCU, diskette writes are disabled when the system is in the secure mode. Diskette write protection is only in effect while the system is in the secure mode. Otherwise, write protection is disabled.

Video Blanking

If enabled with the setup or SCU, the video screen goes blank when the system is in secure mode.

Power System

The power system in the server may be configured with one, two, or three 360 watt power supplies.

The 360 watt power supply provides sufficient power for an entry level server. The power supply accepts these input voltage ranges:

∙100-120 VAC at 50/60 Hertz (Hz); 7.7 A maximum current

∙200-240 VAC at 50/60 Hz; 4.4 A maximum current

If a single power supply fails in a redundant power system, the yellow power supply failure LED on the front panel starts flashing. You can swap out the faulty supply without shutting down the server.

Server Cooling

Two blowers inside the chassis provide cooling for the processors, memory modules, and add-in boards. Two more fans may be installed for redundant cooling. If a fan or blower fails, the server management subsystem notifies the system board and turns on an LED on the front panel.

A system with only one power supply includes an auxiliary fan to provide cooling for the hard drives. A system with multiple power supplies provides enough cooling without an auxiliary fan.

28 Chapter 1 Server Description