Lenovo ThinkStation D20 User Manual page 18

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 51 for the information on the supported system memory
speed for your own computer model.
Internal drives
• 3.5-inch standard half-high diskette drive (optional)
• Card reader (optional)
• Optical drive
• Serial Advanced Technology Attachment (SATA) internal hard disk drive or Serial attached SCSI (SAS)
internal hard disk drive
Video subsystem
• Graphics card (varies by model type)
Audio subsystem
• Integrated high-definition (HD) audio
• Headphone connector and microphone connector on the front panel
• Eight audio connectors on the rear panel
– Audio line-in connector
– Audio line-out front speaker connector
– Audio line-out rear speaker connector
– Audio line-out side speaker connector
– Audio line-out subwoofer/center speaker connector
– Microphone connector
– Optical SPDIF in connector
– Optical SPDIF out connector
• Internal speaker
Connectivity
• Peripheral Component Interconnect (PCI) V.90 Data/Fax modem (some models)
• Two 10/100/1000 Mbps integrated Ethernet connectors
System management features
• Ability to store POST hardware test results
• Alert Standard Format (ASF) 2.0
• Automatic power-on startup
• Preboot Execution Environment (PXE)
• Remote Administration
• System Management (SM) Basic Input/Output System (BIOS) and SM software
• Wake on LAN
• Wake on Ring (in the Setup Utility program, this feature is called Serial Port Ring Detect for an external
modem)
Input/Output (I/O) features
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ThinkStation User Guide