Lenovo ThinkStation C20 User Manual page 8

Audio subsystem
• Integrated high-definition (HD) audio
• Microphone connector and headphone 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 Sony Philips Digital Interconnect Format (SPDIF) in connector
– Optical SPDIF out connector
• Internal speakers
Connectivity
• One or two 10/100/1000 Mbps Ethernet controller(s)
System management features
• Ability to store the power-on self-test (POST) hardware test results
• Advanced Configuration and Power Interface (ACPI) support
• Alert Standard Format (ASF) 2.0
• Automatic power-on startup
• Preboot Execution Environment (PXE)
• 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)
• Windows Management Instrumentation (WMI)
Input/Output (I/O) features
• 9-pin serial port (available on some models)
• 10 USB (Universal Serial Bus) connectors
• Eight audio connectors on the rear panel
• One external Serial Advanced Technology Attachment (eSATA) connector
• One or two Ethernet connector(s)
• Two audio connectors on the front panel (microphone connector and headphone connector)
• Two IEEE 1394 connectors (available on some models)
For more information about I/O features, see "Locating connectors on the rear of your computer" on page 7.
Expansion
• One optical drive bay
• One PCI Express x1 card slot
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ThinkStation User Guide