Lenovo ThinkCentre M55 User Manual

Chapter 5. Using the Setup Utility
The Setup Utility program is stored in the electrically erasable programmable
read-only memory (EEPROM) of your computer. The Setup Utility program is used
to view and change the configuration settings of your computer, regardless of
which operating system you are using. However, the operating-system settings
might override any similar settings in the Setup Utility program.
Starting the Setup Utility program
To start the Setup Utility program, do the following:
1. If your computer is already on when you start this procedure, shut down the
operating system and turn off the computer.
2. Repeatedly press and release the F1 key while turning on your computer.
Note: If a user password or an administrator password has been set, the Setup
Utility program menu is not displayed until you type your password.
See “Using passwords” for more information.
The
Setup Utility might start automatically when POST detects that hardware has
been removed or new hardware has been installed in your computer.
Viewing and changing settings
The Setup Utility program menu lists items that identify system configuration
topics.
When working with the Setup Utility program menu, you must use the keyboard.
The keys used to perform various tasks are displayed at the bottom of each screen.
Using passwords
By using the Setup Utility program, you can set passwords to prevent
unauthorized persons from gaining access to your computer and data. The
following types of passwords are available:
v User Password
v Administrator Password
You
do not have to set any passwords to use your computer. However, if you
decide to set any passwords, read the following sections.
Password considerations
A password can be any combination of up to twelve characters (a-z and 0-9) and
symbols. For security reasons, it is a good idea to use a strong password that
cannot be easily compromised. Strong passwords typically adhere to the following
rules:
v Have at least eight characters in length
v Contain at least one alphabetic character, one numeric character, and one symbol
v Contain at least one of the following symbols: , . / ` ; ' []
v You can also use the space bar
© Lenovo 2005, 2006. Portions © IBM Corp. 2005. 49

Lenovo ThinkCentre M55 Specifications

General

Tcase	61.4 °C
Bus type	FSB
Stepping	R0
Processor cache	2 MB
Processor cores	2
Processor model	E6300
System bus rate	- GT/s
Processor family	Intel® Core™2 Duo
Processor socket	LGA 775 (Socket T)
Processor codename	Conroe
Processing Die size	111 mm²
Processor frequency	1.86 GHz
Processor cache type	L2
Processor lithography	65 nm
Processor manufacturer	Intel
Processor front side bus	1066 MHz
Processor operating modes	64-bit
ECC supported by processor	No
Thermal Design Power (TDP)	65 W
Number of processors installed	1
CPU multiplier (bus/core ratio)	7
Number of Processing Die Transistors	167 M
Audio system	High Definition Audio
Product type	PC
Motherboard chipset	Intel® Q963 Express
Memory slots	2x DIMM
Internal memory	1 GB
Memory clock speed	667 MHz
Internal memory type	DDR2-SDRAM
Maximum internal memory	4 GB
Memory layout (slots x size)	2 x 0.5 GB
HDD speed	7200 RPM
HDD interface	SATA
Optical drive type	DVD-ROM
Total storage capacity	80 GB
Power supply type	AC
Power requirements	120 - 230 V
External drive bays	1 x 5.25\
Internal drive bays	1 x 3.5\
Networking features	Gigabit Ethernet
Intel segment tagging	Enterprise, Professional
Compliance industry standards	IEEE802.3, IEEE802.3u, IEEE802.3ab
On-board graphics card	Yes
Discrete graphics card model	Intel® GMA 3000
Maximum graphics card memory	- GB
Operating system installed	Windows Vista Business
USB 2.0 ports quantity	8
Firewire (IEEE 1394) ports	0
Cabling technology	10/100/1000Base-T(X)
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Power supply	225 W
Chassis type	SFF
Product color	Black
Processor code	SLGW2
Processor ARK ID	27248
Processor package size	37.5 x 37.5 mm

Weight and Dimensions

Depth	358 mm
Width	310 mm
Height	88 mm
Weight	8500 g