Compaq 8000 Technical Reference Guide: HP Compaq 8000 Elite Series Business De - Page 92

USB Legacy Support, 8.7 Management Engine Funcitons, Temperature alert

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System BIOS 8.6 USB Legacy Support The system BIOS ROM checks the USB port, during POST, for the presence of a USB keyboard. This allows a system with only a USB keyboard to be used during ROM-based setup and also on a system with an OS that does not include a USB driver. On such a system a keystroke will generate an SMI and the SMI handler will retrieve the data from the device and convert it to PS/2 data. The data will be passed to the keyboard controller and processed as in the PS/2 interface. Changing the delay and/or typematic rate of a USB keyboard though BIOS function INT 16 is not supported. 8.7 Management Engine Functions The management engine function of Intel AMT allows a system unit to be managed remotely over a network, where or not the system is powered up or not1. The system BIOS can request the management engine to generate the following alerts: ■ Temperature alert ■ Fan failure alert ■ Chassis intrusion alert ■ Watchdog timer alert ■ No memory installed alert 1.Assumes the unit is connected to an active AC outlet. 8-8 www.hp.com Technical Reference Guide

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8-8
www.hp.com
Technical Reference Guide
System BIOS
8.6 USB Legacy Support
The system BIOS ROM checks the USB port, during POST, for the presence of a USB keyboard.
This allows a system with only a USB keyboard to be used during ROM-based setup and also on
a system with an OS that does not include a USB driver.
On such a system a keystroke will generate an SMI and the SMI handler will retrieve the data
from the device and convert it to PS/2 data. The data will be passed to the keyboard controller
and processed as in the PS/2 interface. Changing the delay and/or typematic rate of a USB
keyboard though BIOS function INT 16 is not supported.
8.7 Management Engine Functions
The management engine function of Intel AMT allows a system unit to be managed remotely
over a network, where or not the system is powered up or not
1
. The system BIOS can request the
management engine to generate the following alerts:
■
Temperature alert
■
Fan failure alert
■
Chassis intrusion alert
■
Watchdog timer alert
■
No memory installed alert
1.Assumes the unit is connected to an active AC outlet.