Lenovo ThinkCentre M55 User Manual

Updating your operating system
Microsoft makes updates available for various operating systems through the
Microsoft Windows Update Web site. The Web site automatically determines what
Windows updates are available for your specific computer and lists those updates
only. Updates could include security fixes, new versions of Windows components
(such as media player), fixes to other portions of the Windows operating system,
or enhancements.
Refer to the Access Help online help system for more information about updating
your operating system. See “Access Help” on page 62 for instructions on how to
open the online help system.
Installing other operating systems
If you install your own operating system, follow the instructions that come with
your operating system CDs or diskettes. Remember to install all device drivers
after you install your operating system. Installation instructions are usually
provided with the device drivers.
Updating your antivirus software
Your computer comes with the Symantec Client Security software you can use to
detect and eliminate viruses. You should run the LiveUpdate application to get the
latest updates from the Symantec Client Security Web site. LiveUpdate will
download the latest virus list and Symantec Client Security will use the new list
when it scans your computer the next time.
Refer to the Access Help online help system for more information about updating
your antivirus software. See “Access Help” on page 62 for instructions on how to
open the online help system.
Shutting down the computer
When you are ready to turn off your computer, always follow the shutdown
procedure for your operating system. This prevents the loss of unsaved data or
damage to your software programs. To shut down the Microsoft Windows
operating system click Shut Down from the Start menu. Select Shut Down from
the drop down menu and click OK.
Chapter 2. Setting up your computer 9

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