Lenovo THINKSTATION 4105 - Manual (Page 17)

Updating your antivirus software
Your computer comes with antivirus software that you can use to detect and eliminate viruses. Lenovo
provides a full version of antivirus software on your hard disk drive with a free 30-day subscription. After 30
days, you must renew the license to continue receiving the antivirus program updates.
Shutting down the computer
When you 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 7 operating system, open the Start menu from the Windows
desktop and click Shut down.
• To shut down the Microsoft Windows Vista ® operating system, open the Start menu from the Windows
desktop, move the cursor to the arrow next to the lock workstation button, and select Shut Down.
• To shut down the Microsoft Windows XP operating system, open the Start menu from the Windows
desktop and click Shut Down. Then, select Shut down from the drop-down list box and click OK.
Installing external options
For information about installing external options for your computer, refer to “Installing external options” in the
ThinkStation Hardware Installation and Replacement Guide.
Installing the computer on a rack shelf
Your ThinkStation computer can be used on a rack shelf. When installing the computer on a rack shelf,
make sure to leave at least a 12.70 cm (5 inches) space between the front edge of the rack shelf and your
computer for fire protection.
Features
This section provides an overview of the computer features.
System information
The following information covers a variety of models. For information for your specific model, use the Setup
Utility. See Chapter 5 “Using the Setup Utility” on page 17.
Microprocessor
• Intel ® Xeon ® dual-core processor
• Intel Xeon Quad Core processor
• Intel Xeon six-core processor
• Internal cache (size varies by model type)
Memory
Your computer supports up to six DDR3 ECC UDIMMs (double data rate 3 error correction code unbuffered
dual inline memory modules).
Note: The Intel Xeon microprocessor families compatible with this ThinkStation computer feature an
integrated memory controller, which provides the microprocessor with direct access to the system memory.
Because of this design, the system memory speed will be determined by a number of factors, including
Chapter 3 . Setting up your computer 11