Lenovo ThinkCentre M55 User Manual

Chapter 3. Installing options
This chapter provides an introduction to the features and options that are available
for your computer. You can expand the capabilities of your computer by adding
memory, adapters, or drives. When installing an option, use these instructions
along with the instructions that come with the option.
Important
Before you install or remove any option, read “Important safety information”
on page v“Important safety information” on page v. These precautions and
guidelines will help you work safely.
Note: Use only the parts provided by Lenovo.
Features
This section provides an overview of the computer features and preinstalled
software.
System information
The following information covers a variety of models. For a listing of features
for your specific model, go to Chapter 5, “Using the Setup Utility,” on page
49.
Microprocessor
v Intel
®
Pentium
®
4 processor with HyperThreading Technology
v Intel Pentium D processor
v Intel Celeron
®
D processor
v Intel Core
™
2 Duo processor
v Internal cache (size varies by model type)
Memory
v Support for four double data rate dual inline memory modules (DDR2 DIMMs)
v 8 Mbit flash memory for system programs
© Lenovo 2005, 2006. Portions © IBM Corp. 2005. 11

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