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Technical Reference Guide
4.7.1.3 Cable Lock Provision
These systems include a chassis cutout (on the rear panel) for the attachment of a cable lock
mechanism.
4.7.1.4 I/O Interface Security
The serial iskette bled individually through the Setup
utility to g unauthorized ac addition, the ability to write to or boot
from a rem dia drive (such as may be enabled through the Setup
utility. Th al, para terfaces are a function of the
LPC47B3 r. The USB p through the 82801 ICH2.
.7.1.5 Chassis Security
Desktop systems feature Smart Cover (hood) Sensor and Smart Cover
a
v
this “intr his bit will remain set (even if the cover is
lert-On-LAN and or one of three levels of support for a “cover removed” condition:
Level 0 - Cover remov POST, status bit is
c her action is taken by BIOS.
L ng POST the message “The computer’s c as been rem since the
s ime stamp in CMOS ed.
L er has b removed sin e last syst
u s updat nd the user i mpted for t
a word.
Cover Lock
he Sma e a solenoid-operated locking bar that, when
ctivated the
PC47B A locked hood
ay be b s that hold the locking mechanism in place. The
ecial screws are removed with the Compaq Smart Cover Lock Failsafe Key.
, parallel, USB, and d interfaces may be disa
uard against cess to a system. In
ovable me the diskette drive)
e disabling of the seri llel, and diskette in
67 I/O controlle orts are controlled
4
he Small Form Factor and T
(hood) Lock mechanisms to inhibit unauthorized tampering of the system unit.
mart Cover Sensor S
ll Form Factor and Desktop systems include a plunger switch that, when the cover (hood)
2801 ICH2. The battery-backed logic will record
The Sm
is remo ed, closes and grounds an input of the 8
usion” event by setting a specific bit. T
replaced) until the system is powered up and the user completes the boot sequence successfully, at
which time the bit will be cleared. Through Setup, the user can set this function to be used by
A
al indication is essentially disabled at this level. During
leared and no ot
evel 1 - Duri over h oved last
ystem start up” is displayed and t is dat up
evel 2 - During POST the “The computer’s cov een ce th em start
p” message is displayed, time stamp in CMOS i ed, a s pro he
dministrator pass
Smart
T ll Form Factor and Desktop systems includ
a , prevents the cover (hood) from being removed. The GPIO ports 44 and 45 of
L 367 I/O controller provide the lock and unlock signals to the solenoid.
m
sp
ypassed by removing special screw
Compaq Evo and Workstation Personal Computers
Featuring the Intel Pentium 4 Processor
Second Edition - January 2003
4-27