Lenovo ThinkCentre M55 User Manual

Chapter 2. Setting up your computer
Before you begin, make sure you set up your computer in the best possible work
area that suits your needs and the kind of work you do. For more information,
refer to Chapter 1, “Arranging your workspace,” on page 1.
Note: Read “Important safety information” on page v before you set up your
computer. The precautions and guidelines will help you work safely.
Connecting your computer
Use the following information when connecting your computer. Look for the small
connector icons on the back of your computer.
If your computer cables and connector panel have color-coded connectors, match
the color of the cable end with the color of the connector. For example, match a
blue cable end with a blue connector or a red cable end with a red connector.
Note: Depending on your model type, your computer might not have all of the
connectors that are described in this section.
1. Check the position of the voltage-selection switch on the rear of the computer.
Use a ballpoint pen to slide the switch, if necessary.
v If the voltage supply range is 100–127 V ac, set the switch to 115 V.
v If the voltage supply range is 200–240 V ac, set the switch to 230 V.
115
2. Connect the Universal Serial Bus (USB) keyboard cable to a USB connector.
© Lenovo 2005, 2006. Portions © IBM Corp. 2005. 3

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