Lenovo 4155 - Manual (Page 22)

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 12.7 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 about
your specific model, use the Setup Utility. See Chapter 5, “Using the Setup
Utility,” on page 21.
Microprocessor
v Intel ® Xeon ® Quad Core
v Intel Xeon Dual Core
v Internal cache (size varies by model type)
Memory
v Supports up to 12 DDR3 ECC UDIMMs
(double data rate 3 error correction code unbuffered dual inline memory
modules)
or DDR3 ECC RDIMMs
(double data rate 3 error correction code registered dual inline memory
modules)
v Each microprocessor supports up to six 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 the microprocessor model and the type, speed, size
(capacity), and number of DIMMs installed. Refer to Appendix B, “System
memory speed,” on page 59 for the information on the supported system
memory speed for your own computer model.
Internal drives
v 3.5-inch standard half-high diskette drive (optional)
v Card reader (optional)
v Serial Advanced Technology Attachment (SATA) internal hard disk drive or
Serial attached SCSI (SAS) internal hard disk drive
v Optical drive
Video subsystem
v Graphics card (varies by model type)
Audio subsystem
v Integrated high-definition (HD) audio
v Headphone connector and microphone connector on the front panel
14 User Guide